People in the West African country of Senegal have made their living from the sea for generations. But overfishing has put the region's fish stocks in crisis. And the Senegalese are struggling to find a solution. Jori Lewis has this report.
As millions of more Chinese enter the middle class, many are demanding a key passport to that lifestyle: a car. Millions throughout the developing world have the same demand. The world can't sustain this. One possible solution: car sharing.
Washington has touted the increased use of biofuels, such as ethanol, as a way to reduce carbon emissions, but a study published today suggesting boosting the use of biofuels also poses some environmental hazards, as The World's Jason Margolis explains.
Efforts to make better use of food resources growing within the city are taking root in Seattle. It's part of a movement to bring urban foraging from the margins to the mainstream as a hedge against food insecurity and climate change.
The BBC's Keith Adams reports on a solar-powered oven that's made out of cardboard and tinfoil. It could help combat climate change by offering an alternative for people who rely on firewood to cook their food. On PRI's The World.
Biofuels have been touted as the best hope for reducing reliance on fossil fuels and limiting greenhouse gases. Now many scientists are raising doubts about that. Reporter Kathleen Schalch examines the debate over the costs and benefits of biofuels.
The answer to today's Geo Quiz is the Kamchatka peninsula in Russia's far east. Anchor Marco Werman speaks with David Quammen who wrote about this remote area ?where salmon rule? for this month's National Geographic.