More

Japanese Crisis Only The Latest Hurdle For U.S. Nuclear Industry

Nuclear Power

First Posted: 03/14/11 04:25 PM ET Updated: 05/25/11 07:40 PM ET

NEW YORK -- Even before a tsunami ravaged Japan and presented the world with a potentially calamitous nuclear meltdown, a much-touted expansion of the U.S. nuclear energy industry was already a tough sell with the American public, not to mention the lawmakers in charge of the national pursestrings.

Nuclear reactors are enormously expensive. Unlike Japan, the United States has a trove of other energy resources to draw on -- not least, huge, newly-discovered reserves of natural gas -- limiting the urgency to invest in alternative sources such as nuclear power.

Now, in the wake of an unfolding nuclear crisis in Japan, those championing aggressive construction of nuclear facilities face an immeasurably more difficult task. After a weekend spent absorbing the prospect of full-blown nuclear catastrophe in Japan, perhaps the world's most sophisticated engineering power, Americans appear far less inclined to assume such risks on their own shores, experts say.

"There's no question in my mind that the situation in Japan will delay any major activities in the United States," said Forrest Remick, a former member of the U.S. Nuclear Regulatory Commission and a professor emeritus of nuclear engineering at Pennsylvania State University.

Although nuclear energy has the backing of powerful politicians in Washington, including President Barack Obama, its value as a clean energy alternative has long been haunted by the specter of past accidents -- Three Mile Island in 1979 and Chernobyl in 1986 -- and the vexing questions surrounding disposal of nuclear waste.

But recent times seemed to be placing the industry in a different light. A swelling U.S. trade deficit combined with fears that some oil-producing states nurture anti-American terrorist groups has fueled interest in alternatives to imported petroleum. Concerns about climate change have intensified the search for cleaner sources of energy. In the past decade, those two forces have helped the nuclear industry transcend its association with past disasters, sowing hopes for a nuclear renaissance.

But the scenes from Japan now dominating the media have dealt a considerable blow to that scenario, underscoring the dangers attendant to nuclear power.

"Having a nuclear reactor is bit like having a trained elephant," said Ellen Vancko, the nuclear energy and climate change project manager at the Union of Concerned Scientists, an environmental research group. "When the elephant is trained and well-behaved and does all the tricks, there most likely isn't going to be a problem. But sometimes elephants have a mind of their own, and nuclear power is particularly unique, in that reactors have a life of their own. When it gets out of control, problems occur."

As stock markets opened Monday morning, companies tied to the nuclear industry took an early hit. General Electric, which has a partnership with the Japanese firm Hitachi to design new reactors, slid 2.1 percent to start the day and has continued to fall. The company also designed one of the reactors at the Fukushima Daiichi plant that suffered an explosion Saturday.

Uranium companies saw the sharpest declines, with Denison Mines Corp. plummeting 27 percent and Uranium Energy Corp. falling 22 percent.

Some experts suggested the situation in Japan, while alarming, should not be used as an argument against expanded nuclear power in the United States, because of differences in geography -- Japan is more vulnerable to major earthquakes and tsunamis.

"Unfortunately, we have a habit of not putting things into perspective," said Remick, the former member of the U.S. Nuclear Regulatory Commission. "So I think it will result in an overreaction."

But even those inclined toward that view said the Japan tragedy should compel a swift reassessment of the risks.

"A review on reactors in earthquake-prone regions is certainly called for," said Burton Richter, a Nobel Laureate in Physics and professor emeritus at Stanford University. "If I was doing it, I wouldn't approve any new ones in earthquake-prone regions until this is fully understood."

Currently there are two nuclear power plants in earthquake-prone California, which the industry says have undergone extensive seismic analysis to withstand magnitudes greater than 7.0, along with all other nuclear reactors in the country.

The Japan events present a quandary to President Obama, who has been a vocal proponent of expanding nuclear energy. On Sunday, a White House spokesman staked out the middle ground, acknowledging safety concerns while also reiterating the president's support for nuclear.

"Meeting our energy needs means relying on a diverse set of energy resources that includes renewables like wind and solar, natural gas, clean coal and nuclear power," the spokesman said, adding that the administration is committed to learning from what happened in Japan and "ensuring that nuclear energy is produced safely and responsibly here in the U.S."

Nuclear power is often viewed as a bargaining chip in the political debate over climate change. Nuclear energy production does not directly contribute to carbon dioxide emissions, as do coal-fired power plants, but environmental groups on the left have traditionally opposed or been lukewarm toward nuclear because of the concerns with the waste it produces.

"Throwing a bone to nuclear is not entirely unlike offshore drilling," said Michael Levi, the director of the Program on Energy Security and Climate Change at the Council on Foreign Relations. "Middle-of-the-road Democrats are increasingly seeing support for nuclear as one concession they can make to the other side in trying to find compromise, and this will make it harder for them to do that. That's unquestionable."

As an entrenched part of the utility industry for decades, nuclear has traditionally been embraced by those on the right. Obama has given the nod to nuclear energy several times in recent months.

In his State of the Union speech, he mentioned the concept of a "clean energy standard," which, as opposed to a "renewable energy standard," would put nuclear energy alongside the push for renewables such as wind and solar. And last month he repeated a budget request, also made last year but not approved by Congress, for $36 billion in loan guarantees for new nuclear reactors.

Immediate political fallout from the events in Japan is still difficult to evaluate, with a variety of sometimes-contradictory reactions capturing attention.

On Sunday's political talk shows, both Democratic Sen. Charles Schumer (N.Y.) and Senate Majority Leader Mitch McConnell (R-Ky.) said the situation in Japan did not change their support for nuclear energy.

"I'm still willing to look at nuclear," Schumer said. "As I have always said, it has to be done safely and carefully."

But Independent Connecticut Sen. Joe Lieberman, historically a supporter of nuclear energy as an option for dealing with climate change, suggested the need for a pause.

"I think we've got to kind of quietly and quickly put the brakes on until we can absorb what has happened in Japan as a result of the earthquake and the tsunami and then see what more, if anything, we can demand of the new power plants that are coming online," Lieberman said on CBS' "Face the Nation."

Rep. Edward Markey (D-Mass.) has raised numerous concerns on the nuclear front since the tsunami, asking the Nuclear Regulatory Commission to halt approval of a new design for a new nuclear reactor and calling for safety reviews of 31 reactors in the United States that are designed like the stricken ones in Japan.

Even before the crisis in Japan, the nuclear industry in the United States had been facing decades of stagnation.

Although no one was injured in Three Mile Island, the 1979 disaster in Pennsylvania cast a pall over the industry that led to a significant slowdown in expansion.

No new nuclear power plants have been built in the United States in three decades, although nuclear energy production has increased as existing plants have become more efficient. The most recent reactor was built 15 years ago.

Nonetheless, the United States remains the leading producer of nuclear energy worldwide, with a fleet of 104 nuclear reactors spread across 31 states -- most of them built in the 1970s and '80s. The industry has generally been the source of about one-fifth of the nation's power supply.

Before the economic recession, incentives for nuclear power in the Bush administration prompted a flurry of applications to build more than 20 new reactors and 14 new nuclear power plants. The current near-term expectation is for four new reactors at sites in South Carolina and Georgia.

But the financing challenges proved immense, with the estimated costs of the 14 plants coming in at $188 billion. Regulatory approvals required three to four years of government review. And the recession put a damper on rising demand for electricity.

Cost overruns have often plagued past projects, and the financial risk is often so great that without government loan guarantees, an entire company could be taken down in the event of failure.

The discoveries of vast new deposits of homegrown natural gas in areas like the Marcellus Shale in Pennsylvania and Northeast made the arithmetic difficult for nuclear investment. And the lack of any comprehensive climate bill, with some form of tax on carbon, has dampened the urgency to invest in large-scale nuclear projects.

As recently as last week, the chief executive of Exelon Corp., a utility company based in Illinois that is the largest owner of nuclear plants in the United States, cited much less expensive natural gas as the primary driver of clean energy in the years to come.

"Some in Congress talk about doubling or tripling the size of the existing nuclear fleet to face our energy challenges," Exelon CEO John Rowe said in a speech last Tuesday at the American Enterprise Institute. "Since these plants are not currently economic at today's low natural gas prices, the government would have to spend $300 billion to 600 billion to get these plants built."

Tom Kauffman, a spokesman for the Nuclear Energy Institute, a lobbying group representing the industry, conceded that public opinion in the wake of Japan could alter public opinions on nuclear energy.

"There's a multitude of variables that are going to impact the situation for new builds, and this is one of those variables that will affect people's views," he said. "But new nuclear power plants will be built. We expected it to be slow, and to be measured. Time will tell."

Unlike the United States, which has historically had vast deposits of coal, oil and natural gas to fuel its own electricity, Japan in recent decades has placed much more of an emphasis on nuclear power because the small island country has fewer domestic natural resources, making its energy supply more vulnerable to fluctuations in import prices.

Japan has actively pursued continuous development of nuclear reactors in recent years, and is the third-largest producer of nuclear energy in the world. The country sources about a third of its energy from nuclear, and aimed to grow it more over the next decade.

Several U.S. companies involved in building nuclear reactors, including Westinghouse and GE, have partnered with Japanese companies to develop new technologies.

"They're extremely developed, they're extremely careful and cautious, and my guess on what you'll see coming out of this is there's a lot of stuff they did right in terms of their safety procedures," said Sarah Ladislaw, a senior fellow on energy and national security at the Center for Strategic and International Studies.

"All of that being said," she added, "this just shows, even with all that good planning, what is possible when you're dealing with these kind of facilities."

FOLLOW HUFFPOST BUSINESS
Subscribe to the HuffPost Money newsletter!
NEW YORK -- Even before a tsunami ravaged Japan and presented the world with a potentially calamitous nuclear meltdown, a much-touted expansion of the U.S. nuclear energy industry was already a tough ...
NEW YORK -- Even before a tsunami ravaged Japan and presented the world with a potentially calamitous nuclear meltdown, a much-touted expansion of the U.S. nuclear energy industry was already a tough ...
 
 
  • Comments
  • 1,176
  • Pending Comments
  • 0
  • View FAQ
Comments are closed for this entry
View All
Favorites
Recency  | 
Popularity
Page: 1 2 3 4 5  Next ›  Last »  (18 total)
HUFFPOST SUPER USER
cats22
Minds are like books; best used when opened
03:43 PM on 03/18/2011
I have firmly believed ever since the 60s that we need to develop multiple sources of energy, not just one. Wind power and solar panels are great. The farmers could have the wind turbines in the fields while they use the land around them for farming, I give credit where credit is due - our local electric company will help you pay for the solar panels plus the installation - but they are expensive anyway and what happens in a hail storm? I do not believe there is anything clean about coal. Natural gas is definitely better to have than electricity as you can still cook on your stove if you use the gas when your electricity is off due to a storm. The nuclear reactors in Japan were developed to withstand a 7 magnitude earthquake, just like the ones in California. It appears that it was not the earthquake that caused all the trouble, but primarily the water coming in. Is something like that possible in the wildest dreams of the California plants? In Florida, we have a reactor which has reportedly been off-line since 2009 when a crack in the foundation was found and repaired. I have lots of questions about that crack. Why is the unit still off-line? Is it that the unit is not safe or is it that it is too expensive to run right now? We need to look at all the resources we have available to us, and not use just one.
photo
HUFFPOST SUPER USER
msbeal
Let no neo-con lie go unchallenged
03:36 AM on 03/16/2011
I just hope while we're touting nuclear energy we don't have to relocate 127 million Japanese to another inhabitable part of the earth.
This comment has been removed due to violations of our [Guidelines]
photo
HUFFPOST SUPER USER
Skeetshooter
Artist, writer, provocateur
10:35 PM on 03/15/2011
Either relicensing leaky old reactors beyond their intended retirement dates OR raising their operational capacity to 120% of their original design specs would dumbfound Carl Pilkington. Two such monumentally appalling wrongheaded droolingly stupid, naively trusting mistakes, apparently make one swell idea. -At least to corporate types who own jets with which they can escape to the Cayman Islands. I want to recall every politician who signs onto this dangerous farce.
This user has chosen to opt out of the Badges program
10:19 PM on 03/15/2011
And what happens to all those nuclear reactors when civilization collapses? But that will never happen, right?

www.offthegridmpls.blogspot.com
photo
HUFFPOST SUPER USER
Skeetshooter
Artist, writer, provocateur
10:37 PM on 03/15/2011
Not this week. Check back on Monday...
09:16 PM on 03/15/2011
Part II:

Reason #3: I used to know a lobbyist for Bechtel when we both lived in Marin County CA and rode the ferry home from San Francisco every afternoon. It took months, but he finally admitted that the nuclear power industry erred by going gigantic. Little is better for nuclear fission. Calculations based on small systems did not translate to the huge sizes. And which brainchild convinced CA to build directly on a major fault line? See what I mean ... humankind cannot be trusted NOT to screw it up, no matter how much safeguarding is done in the drafting.
Reason #4: Ask what would be happening if Japan had lost its solar energy generators in the tsunami, if its windmills had been drowned. It just doesn't make sense to play with radioactivity when there are alternatives waiting to be developed.
The only reason the world is drowning in these radioactive time bombs is profit. Please don't try to tell me nuclear was the only way to fill the gap in the '70s and '80s. I know for a fact alternatives were developed, patented and bought by energy corporations to keep fossil and nuclear market control.

Our problems with corporatization are only beginning to surface. Hang on to your seats, kiddos. It's going to be a bumpy 20 months.
photo
BoFo
Like, you talkin' to me?
06:28 AM on 03/17/2011
You wrote:

"Little is better for nuclear fission. Calculatio­ns based on small systems did not translate to the huge sizes."

Exactly.

BTW, where is Part 1 of your post, I'd like to read it.
08:20 PM on 03/17/2011
You got me, Pal. I don't know why Huff Post won't post the first part. I've tried several times, and asked for an explanation ... nothing. Maybe it's because I was part of a citizen-led group in Cincinnati that stopped a nuclear power plant from going online in the '70s and the corpopolis that now owns Huffpost has a problem with that. (Michio Kaku was a young man then; he helped us convince the NRC. I told that story (Reason #2). Reason #1 was the planet is unstable.

It gets so frustrating. The internet was our best tool, but now it's falling into the same hands. I wish the last 30 years could be done over.
HUFFPOST SUPER USER
wrabbitt
Soylent Green IS People.
05:51 PM on 03/15/2011
The nuclear industry is a hard pill to swallow, considering that people don't want wind turbines in their town, because they are ugly. Well, tree huggers, turbines won't kill you unless you have a suicide pact and jump off one, and they will not make you glow.
photo
OMEGA MAN
A wise man learns by the mistakes of others, a foo
07:35 AM on 03/16/2011
Noisy. they are loud and you need many.
03:18 PM on 03/15/2011
"A swelling U.S. trade deficit combined with fears that some oil-producing states nurture anti-American terrorist groups has fueled interest in alternatives to imported petroleum." Chris Kirkham - Amy Lee. Huffington Post. This is an understatement to say the least. And, at the most mis-leading to the point of deception. The Department of Energy has but one mission that it has failed to accomplish since it's inception. That is, to make the United States energy independent.
05:19 PM on 03/15/2011
As long as there is money to be made from the sale of oil, unfortunately, we will never be energy independent.
07:21 PM on 03/15/2011
There will always be a profit, as you pointed out, and political motive. The only reason that we as a Nation State are dependent on foreign sources of energy is that we, that is public employees, choose not to be energy independent of foreign sources of energy. With our technology and natural resources I can come with no other reason that is reasonable ...to me.
03:07 PM on 03/15/2011
"Those who cannot remember the past are condemned to repeat it."--George Santayana (1863-1952). If the worst were to happen, a meltdown could have far reaching effects. UK Guardian reporters Terry Macalister and Helen Carter (2009) wrote that nearly 370 farms in Britain are still restricted in the way they use land and rear sheep because of radioactive fallout from the Chernobyl nuclear power station accident 23 years ago. They also reported that the Ukraine explosion and fire was the biggest nuclear accident ever. In its aftermath 237 people suffered from acute radiation sickness, of whom 31 died within the first three months. Accurate statistics on the wider health problems have been hard to ascertain because the Soviet authorities of the time refused to provide details. More than 130,000 people were resettled from the immediate area and experts say there should be no farming there for at least 200 years. The Food Standards Agency said the release of radiocaesium-137 in upland areas of Britain is still able to pass easily from soil to grass and accumulate in sheep. Read more about this article at http://www.guardian.co.uk/environment/2009/may/12/farmers-restricted-chernobyl-disaster
03:04 PM on 03/15/2011
To all the people who keep posting that nuclear is safe because other forms of energy production kill people as well as things like car accidents and tornados: All you are doing is making a FALSE EQUIVALENCY. Yes, other things kill people besides nuclear energy gone wrong. Yet besides the human toll, you've never seen any other form of energy production do the damage that radioactive releases do when they go wrong. Poison in the food supply, genetic defects, and exclusion zones. Before this is over, its going to get worse. This is the nuclear Deepwater Horizon and the toll will be paid for a hundred years.
02:22 PM on 03/15/2011
Nuclear energy is safe. 19 Arabs brought down 3 skyscrapers while making 2 jets disappear. You can trust your banker. The stock market is operated with integrity.. The US government is the first to admit errors and accept responsibility. In some laboratory a scientist is not attempting to develop a genetic virus that will only attack dark skinned people. Jesus saves. If you are 35 years old Social Security will be there to provide for your retirement. .. there is so much truth out there.

No here is the real truth......America could grow by leaps and bounds in the next 10 years if it developed it's Solar and Wind energy programs with a Manhattan Project scale and pace. The ONLY drawback is while companies like GE and Siemens would make a lot of profits initially corporate America would NEVER allow this to happen because they can't figure a way to charge money for the Sun or the Wind.
To get to the root of a problem...just follow the money.
Nuclear energy exists only because someone is making a profit... eliminate the profit and it will go away.
My organization figures the retrofitting of America could create 40 million GREEN jobs for 10 years.
But who is interested in creating 40 million GREEN jobs ?
Nuclear is very safe... till it gets very unsafe.
Death is not a problem...till it's your death.
photo
HUFFPOST SUPER USER
angusmciver
Feels Empty
02:30 PM on 03/15/2011
F&Fed Had the good ole USA gone in this direction after Carter put solar on the White House in the 70's Just imagine where the technology and production might be today. But no, we sold out to Big Oil and it will continue until the last drops are burned. Don't get me wrong all you naysayers out there. We need oil and gas, but not to the degree that we see here now. America went in the direction of the Hummer and Bush's vice pres. said it best."there is no room in America's energy policy for conservation. It is all so wrong. You live and learn. So learn.
04:00 PM on 03/15/2011
Jimmy Carter had the entire Congress riding around in Dodge Ares and Plymouth Reliants.

Carter refused to go to war to save 58 hostages.

Carter's poor tortured soul tried to govern Sodom with morality.

President Carter was a long tailed cat in a room full of rocking chairs.

And the crown cried out...."GIVE US BARABBAS".
photo
HUFFPOST SUPER USER
Paolo Cimarelli
I was the kid next door's imaginary friend.
02:38 PM on 03/15/2011
would love to see you retro-fit a Nuclear powered submarine with something as efficient.
03:49 PM on 03/15/2011
Is it a necessity of mankind to have nuclear submarines ?

What do they protect us from the Bogeymen with "BOX CUTTERS" ?

Now we can send a missile down the chimney.

We don't need anymore anti-tank missiles when the greatest threat requires a anti-bank missile.

My dear friend Paolo, you must refrain from drinking the Kool-Aid regardless of your personal thirst.
photo
HUFFPOST SUPER USER
aligatorhardt
I DO NOT pity the fool
11:47 AM on 03/16/2011
Would love to see a society that did not depend on killing others to make themselves feel powerful. Do we really need nuclear powered subs at all??
HUFFPOST SUPER USER
joedas
My former employer would forbid it,
01:54 PM on 03/15/2011
Good grief! Business is more important than People. No?
what about that EPA chief, Whitman(?) who said the air was safe around the catastrophe of the World Trade Towers. She excused herself by saying, she was ill advised. Yeah....

Business will stand up for business and if a reactor has a melt down, they will say we weren't aware of anything going wrong. Yeah....

Who can we trust to say Nothing Will Go Wrong. ????
charles77
Just the Facts Please
01:04 PM on 03/15/2011
Nuclear is by far our safest form of energy, you can’t get around that.

“Even if you count all the deaths plausibly related to Chernobyl—9,000 to 33,000 over a 70-year period—that number is dwarfed by the death rate from burning fossil fuels. The OECD's 2008 Environmental Outlook calculates that fine-particle outdoor air pollution caused nearly 1 million premature deaths in the year 2000, and 30 percent of this was energy-related. You'd need 500 Chernobyls to match that level of annual carnage. But outside Chernobyl, we've had zero fatal nuclear power accidents.”

“That doesn't mean we can ignore what has happened in Japan. Precisely because nuclear accidents are so rare, we have to study them intensely. Each one tells us what to fix in the next generation of power plants. The most obvious mistake in Japan was parking the diesel generators in an area low enough to be flooded by a quake-driven tsunami. The batteries that backed up the generators weren't adequate, either.”

http://www.slate.com/id/2288212/
photo
HUFFPOST SUPER USER
MrBadExample
Friends call me ‘exampleicious’
01:34 PM on 03/15/2011
here's the link regarding deaths at Chernobyl--almost a million deaths over 25 years per the New York Academy of Science.

http://www.globalresearch.ca/index.php?c>

Here are figures from Doctor Rosalie Bertell, a winner of the Alternate Nobel prize for her work on nuclear epidemiology. She also served as a consultant for both the NRC and the UN's IAEA. Per her calculations, nuclear weapons testing plus nuclear power production caused tens of millions of extra cancers and birth defects since the first bomb was exploded at Trinity.

http://www.ratical.com/radiation/NAvictims.html

One of her salient points is that ionizing radiation is ALWAYS damaging, even though its effects are not always visible. Accordingly, there are no safe levels of ionizing radiation exposure.
This comment has been removed due to violations of our [Guidelines]
02:59 PM on 03/15/2011
Garbage.

The sources you quote are deeply agenda-driven individuals/organizations with no credibility.

The range of credible estimates for Chenobyl's impacts (from respected, objective, official sources) is anywhere from 100 to ~10,000 eventual deaths. The effects of a worst-case event at a Western (non-Soviet) plant would be orders of magnitude smaller. For comparison, fossil fuel power plants cause ~200,000 deaths, worldwide, every single year.
photo
HUFFPOST SUPER USER
mswyers
12:59 PM on 03/15/2011
It is a false meme being promoted on the MSM: Nuclear power is not carbon neutral. Helen Caldicott has reported that 88% of CFCs in the US are from nuclear power emissions. These are potent greenhouse gases and deplete the ozone. The entire nuclear industry is in violation of the Montreal Protocols. Also, it takes 18 years of operation of a nuclear plant before one calorie of NET energy is created. Sounds like a shell game to me. There are other sources of baseline power: geothermal, ocean tidal, low impact hydro, battery backup. And there is conservation. CA has essentially had a flat energy usage for 30 years - the rest of the country would do well to follow suit. We use 25% of the energy in the world - the Pentagon uses 6% in the world. Then there is the dirty little secret of the nuclear industry: depleted uranium weapons: http://www.globalresearch.ca/index.php?context=va&aid=2374
photo
HUFFPOST SUPER USER
MrBadExample
Friends call me ‘exampleicious’
01:10 PM on 03/15/2011
thanks for posting this.

Although the creation-of-power part of the nuclear cycle is relatively carbon free, the mining, refining, and (most energy-costly) disposal of all the uranium tailings and irradiated waste (every helmet, glove and shovel used to dig out the uranium in the first place) is immensely power-intense, and most of that has to be supplied by fossil fuels. And even after accounting for all of these, nuclear power enjoys a slight edge over, say, natural gas--UNTIL THERE'S AN ACCIDENT.then all bets are off.

There was a study cited on theoildrum.com (an alt-energy website that evaluates post-carbon energy sources) and nuclear has a 5x1 return on energy investment--that's worse than pv solar and wind. Their justification for the rating was all the 'external' expenditures on nuclear, including all the capital spent on the plants and the low life-cycle expectations of same.
photo
HUFFPOST SUPER USER
Paolo Cimarelli
I was the kid next door's imaginary friend.
01:27 PM on 03/15/2011
Where do you think the Metals to create the inner workings of a wind turbine and solar panels come from? Here's another wake up call to all you hypocrites: that "go green" Toyota Prius you're driving.. Made with Nuclear energy.
03:04 PM on 03/15/2011
As with the post above on Chernobyl's impacts, the net CO2 emissions data quoted above comes from agenda-dri­ven individual­s/organiza­tions with no credibilit­y. Studies saying that nuclear's net emissions (after accounting for parts of the process/cycle) are similar to natural gas have been thoroughly debunked.

The scientific concensus (based on the overwhelming majority of studies, one of which is linked below) is that nuclear's total net emissions are ~2% of coal's, ~5% as much as natural gas, and similar to or lower than renewables.

http://www.iaea.org/Publications/Magazines/Bulletin/Bull422/article4.pdf
12:23 PM on 03/15/2011
The world should not depend on nuclear energy or weapons because it is too dangerous.