While dodging bullets and spears of poachers and rebels, Virunga National Park ranger Innocent Mburanumwe can put a 700-pound gorilla at ease with a few strategic grunts.
Nine more persistent chemicals banned worldwide.
A firsthand look at the effects of climate change near the South Pole.
New federal standards could cut energy bills by about $16 billion by 2030.
Two new climate studies say that the US must cut carbon dioxide emissions by 90 to 95 percent to prevent the planet from becoming too warm.
Pollution levels and topography have helped make smog 'a way of life' in Bakersfield, Calif.
A recession may be a cruel remedy for environmental degradation. But some experts say the earth welcomes the breathing room.
Activists must tread softly to avoid antagonizing Beijing, butthere’s much at stake in this rapidly developing country.
Proposed legislation could reduce the city’s total carbon output by 5 percent.