For their new book, Breaking Through Concrete: Building an Urban Farm Revival, brothers David and Michael Hanson and crew traveled the nation visiting and documenting urban farms. Read more about the tour here.

Obama may have slapped down the Keystone XL pipeline, but Republicans in Congress don't mind playing dirty to make sure Big Oil scores again. On Tuesday, hundreds of protesters called foul on Congress and Big Oil and demanded that they quit trying to win the game in overtime.

It's a cruel world out there, but at Grist we work hard to keep it habitable -- or at least to keep you chuckling as it goes to hell in a carbon-colored handbasket. Yes, you could blow your cash on other things (Shake Weights!) instead of donating to Grist. But imagine a future without Grist ...

How many ways are there to say, "It's time for change"? The protesters in New York City over the past few months have found a seemingly endless variety. This is a movement that refuses to be boxed in and it doesn't look like it's going away soon.

Scraggly protesters camped out in public parks. Young people pepper sprayed and bloodied in clashes with the police. These are the images that have come to represent the Occupy movement. But as these portraits show, the reality is far richer. The occupiers deserve to be heard.

Last Thursday morning, when protesters blocked an intersection in a failed attempt to shut down Wall Street, the police moved in with force. The national media paid scant attention. Here's the view from the street.

Check out more photos from Wednesday's gathering and march in Oakland, Calif.

Last weekend, eaters from around the country celebrated the first annual Food Day (Oct. 24). It's an event modeled after Earth Day, but seeing as how the food movement is the new environmental movement, it wouldn't surprise us if Food Day outpaced Earth Day within a few years.

Eat it, Dwell. The kids who designed the sun-fired homes for the 2011 Solar Decathlon came up with some remarkably innovative designs, each engineered to meet the challenges of the local climate and/or economy. Read our Decathlon review here. Winners will be announced Saturday.

The Center for Biological Diversity wants to give away 100,000 Endangered Species Condoms this fall. Wanna help? Sign up and you'll always have a good pick-up line. The condoms are part of the 7 Billion and Counting campaign highlighting how population growth threatens diversity.