Jessica Marati, 2/7/12

Sustainable Style Blogger, toutlemon.de

H&M's steps toward sustainability are certainly laudable. However, it's undeniable that H&M's fast fashion model is in itself wildly unsustainable.

Damien Clarkson, 2/7/12

Environmental Activist

If politicians are looking to turn rhetoric into action and crack down on irresponsible capitalism then in Shell we have found a corporation ripe to be held to account.

Brian Merchant, 2/7/12

Freelance writer and editor living

Fossil fuels seem cheap and convenient now, but when we get hit with the true costs -- of a spoiled environment, of missing out on vital future industries like clean energy, of a mounting public health burden, of possible war -- we'll see we were had.

Rabbi Rachel Kobrin, 2/7/12

Assistant Rabbi, Congregation Agudas Achim

As children, we cherish the opportunity to climb a tree. So too, we strive to ascend Torah, grasping its multiple branches of interpretation and reaching for higher meaning.

Bill Eikenberry, 2/7/12

Third-generation Wyoming rancher

Lamborn's bill actually creates a new taxpayer-funded subsidy for companies like Shell by allowing cuts to royalties and shifting basic infrastructure and services costs onto the backs of struggling local governments.

Rabbi Yonah Bookstein, 2/7/12

Executive Rabbi, JConnectLA & Jewlicious

Kabbalist's believe that eating 10 specific fruits and drinking four cups of wine in a specific order while reciting the appropriate blessings would bring human beings, and the world, closer to spiritual perfection

Robert Greenwald, 2/7/12

Filmmaker, Brave New Foundation

Why will Charles and David Koch produce a video about their position on the Keystone XL oil pipeline and not testify before Congress about it?

Carl Safina, 2/7/12

MacArthur fellow, Pew fellow, and Guggenheim fellow, author of award-winning books

Want to just solve the problem? They estimate that whaling makes about $31 million in profits. Anti-whaling spends $25 million. If the anti-whaling money directly paid whalers not to hunt -- problem solved.

Liz Neumark, 2/7/12

CEO, Great Performances

Our mission this weekend was to sample the greens, ranging from micro-greens and sprouts to full size lettuces and other leafy specimens, at the Union Square Greenmarket.

Susanna Murley, 2/7/12

Web Editor, Planet Forward

Smart cities are attracting residents -- and talent -- by making investments in infrastructure that save money, clean up and integrate sustainability into city functions

Edward Flattau, 2/6/12

Environmental newspaper columnist

Not so fast, BP. The oil company is running TV ads trumpeting that the Gulf Coast is well on its way to recovery from the Deepwater Horizon oil spill. Whitewashing the situation may actually slow the progress towards recovery.

Bruce Parry, 2/6/12

TV Presenter And Author Of Arctic

Rasmus has run out of walrus meat so the dogs will have to make do with dry biscuits. Unless we get some meat we're all going to go hungry, that's the way of it out here.

Al Gore, 2/4/12

Chairman, Current TV

From the ice melting in Antarctica, to rising sea levels flooding Bangladesh, to the prospect of a compromised drinking water supply in New York City, the world's glaciers tie together our greatest challenges of the 21st century.

Rocky Kistner, 2/6/12

Media associate, NRDC

Take millions of gallons of natural gas hydro-fracking waste water then pour it down a hole dug thousands of feet down into the bedrock and what do you get?

Colleen Murphy-Dunning, 2/6/12

Director, Urban Resources Initiative

Our country, a promised land of opportunity, needs a national green jobs program that targets ex-offenders.

Allegra Panetto, 2/6/12

Peace Corps Volunteer in Malawi

Coming from the U.S., where alternative forms of energy are still atypical, it's hard, at first, to believe that in rural Malawi, where the majority of people live without electricity or running water, most people know about and want access to solar electricity.

Frank Mazzotti, 2/6/12

Professor of wildlife ecology and conservation, University of Florida

Stories about large snakes feed directly into an archetypal fear that humans have of snakes, and stories about a feeding frenzy of snakes wiping out wildlife fuels a feeding frenzy of media coverage that wipes out the truth.