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.
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.
Mitt Romney begins a bus tour today across six states where green jobs are far from illusory.
On the eve of the Rio+20 Earth Summit, we look back at four decades of global conservation efforts and take stock of the successes and the failures. Well, mostly the failures.
Golden State residents will cast a vote on GMO labeling this November. Here's what it would mean for farmers and consumers if the measure passes.
A Maryland organic farm's battle against development raises big questions about the future of food and farming in this country.
New research found that weeds exposed to high levels of CO2 actually transfer their genes to nearby crops and make them behave like weeds.
People involved in climate politics are always using polls to show that the public supports their policy positions. But polls actually tell us very little about how politics will play out in the real world.
Can you recycle beer bottles with lime wedges? Umbra tosses back an answer.