At least for now, the battle over the Keystone Pipeline -- the most visible environmental cause in many years -- has moved from the scarred boreal forest of Alberta and the Sand Hills of Nebraska to the halls of Congress. Or rather, it's moved to send button on your email...

The fossil fuel lobby aggressively uses lobbying and propaganda to block public health protections, manipulate the energy debate, defend their massive government handouts and attack clean energy sources that threaten to displace them.

No tool goes unused: Traditional lobbying, "super PAC" donations, software that...

House Republicans have an opportunity to pass transportation legislation that would help create new jobs, fix our roads and bridges, and improve our commutes. What have they decided to do instead? Load up their version of a transportation bill (HR. 7) with an ideological wish list that will prevent Congress from...

Another major poll has confirmed that American voters across the political spectrum welcome clean energy development. It also found that when given the facts, the majority of Democrats and independents oppose the Keystone XL pipeline for dirty tar sands oil.

The support for clean energy isn't news --...

The toll of tar sands development has been largely hidden hundreds of miles to the North. Canadian forests once provided the last undisturbed refuge in North America for migrating songbirds, ducks and geese, and the vast stretches of wilderness in northern Alberta have been ideal for wild wolves...

Science Magazine just published a great article about peak oil, and I realized it's been exactly a decade since I became "peak oil aware." 9/11 had just happened, and to try and understand the world I did something I wasn't, as an American, supposed to do -- I...

When I published my first book -- Indoor Marijuana Horticulture -- back in 1983, there was no way to know how much things would change in the next three decades.

Back then Ronald Reagan was President of the United States, M*A*S*H went off the air and no one had ever...

The Sasumua dam supplies Nairobi, Kenya with 20 percent of its fresh water, but land use changes have started to contaminate this important source of water. Forests and wetlands are being converted into agricultural land and commercial plots. This reduces water flow during the dry season and increases surface runoff...

Do you like CSI? I remember the esteemed climate scientist Michael MacCracken once saying that climate researchers need to be like CSI investigators, prying out the truth from obscure clues. But how often has a CSI episode been a whodunit where the outcome could effect everyone? So, kick up your...

NASA climate scientist Jim Hansen and colleagues weigh in on the missing heat issue.

In 2009 Kevin Trenberth, of the National Center for Atmospheric Research, raised the issue of missing heat in a paper (PDF) titled "An Imperative for Climate Change Planning: Tracking Earth's Global Energy."...

Of those named to Ethisphere's "2011 100 Most Influential People in Business Ethics" last month, readily apparent is the occupational diversity of the field. Rare is the occasion that one sees the likes of Michelle Obama (#53) and Stephen Colbert (#48) listed alongside the...

Note to readers: This post builds on the one taken down last week. Many apologies.

Yet another blog post commenting on the WSJ debacle about non-climate scientists' opinions versus climate scientists' opinions got me thinking (again) why the conversation about climate...

For holidays tainted by commercialism, Valentine's Day gives Christmas a run for the money -- big money. The National Retail Federation estimates Americans will spend $17.6 billion on Valentine's gifts this year, including $4.1 billion on jewelry, $1.8 billion on flowers and $1.5 billion on candy. But for...

by guest blogger, Maya K. van Rossum, the Delaware Riverkeeper

For more than 20 years, my organization, the Delaware Riverkeeper Network, and I have been challenging the Army Corps of Engineers' proposal to deepen the Delaware River's main channel by 5 feet for 102...