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Urban Agriculture

What farms can do for cities: A chat with author Sarah Rich

The author talks about her new book, Urban Farms, the difference between a farm and a garden, and how city farmers are moving beyond the trend factor.

Politics

Rio-ality check: Can the Earth Summit be saved?

With just days to go before world leaders arrive in Rio, international talks are sliding toward the lowest common denominator. But maybe that’s not such a bad thing.

Food

Sea sick: Another virus crashes Canada’s salmon farms

Viruses that devastate fish farms, like the one that broke out last month in British Columbia, could have serious implications for wild salmon populations.

Climate Change

Climate change is simple: We do something or we’re screwed [my TEDx video]

In April, David Roberts gave a TEDx talk entitled "Climate change is simple." Here, he expands on the points he made during that brief presentation.

Green Living Tips

Ask Umbra: How can I get my neighbors to stop spraying pesticides?

A reader's garden has been poisoned by her spray-happy neighbors. Umbra offers ways to help them catch the drift.

Climate & Energy

Twitterstorm rising: On Rio eve, sharing a call to end fossil fuel subsidies

Can 350.org outdo Justin Bieber in setting records on Twitter? And can that possibly make a difference to the planet?

Green Cars

Electric cars: A shopper’s cheat sheet

There are plenty of EV models to choose from these days, which makes for a complicated decision. Here's a table with basic stats on the major electric and plug-in hybrid cars.

Climate & Energy

Hot dam: Hydropower continues to grow

World hydroelectric power generation has been rising steadily for 40 years. But there's still enormous potential in unconventional hydropower like tidal and wave projects.

Cities

Rio: Let’s unleash the power of people back home

Since the first Rio Earth Summit, the global environmental picture has gotten even more grim. Our mistake, argues longtime conservationist Spencer Beebe, was believing that top-down solutions could save the planet.