Biologist Mario Moscatelli along the shores of Guanabara Bay in Rio
One year ahead of the 2016 Summer Games, Rio de Janeiro's Guanabara Bay remains a polluted mess and a serious health hazard for Olympic athletes who are due to compete there. But one biologist in Rio, who says this pollution is a "disruption of the force," isn't giving up on efforts to clean up the bay.
Zimbabwean hunter Theo Bronkhorst (center) waits to appear in Hwange magistrates court. Bronkhorst is one of the two Zimbabwean men who were paid $50,000 by an American hunter who killed "Cecil," the country's best-known lion.
Big game and the death of a lion in Zimbabwe is sparking a very big controversy.
Smog shrouds Chile's capital Santiago, June 22, 2015.
A new report in the British medical journal The Lancet says climate change poses a potentially catastrophic risk to human health. But it also says fighting climate change can bring big health benefits.
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In its effort to address a growing water crisis, Peru's capital, Lima, is looking to ancient canals in high mountain villages outside the city.
Pope Francis arrives to lead his Wednesday general audience in Saint Peter's square at the Vatican in Rome on June 17, 2015.
“Cultural revolution” and “radical change” are terms you might not expect to come out of the Vatican. But that’s language Pope Francis is using to talk about what he says is need to save planet earth and all of humanity along with it.
"Kayaktivists" demonstrate in Seattle's Elliot Bay against the arrival last month of the Shell's massive Polar Pioneer oil rig, rising behind them above the city's waterfront. Shell is using Seattle as a staging area for its new offshore drilling operatio
President Obama has given Shell the green light to drill for oil in the Arctic Ocean, but activists and politicians in Seattle are throwing up as many stop signs as they can as the drilling rig preps there for its journey north. It's the latest flashpoint in the growing international anti-fossil fuel movement.
A bee approaches a peach blossom. Many of the more than 20,000 species of bee worldwide, including the well-known honey bee, are threatened by disease, habitat loss, and pesticides. President Obama's national pollinator plan would provide incentives for r
Honey bees and other pollinators are in big trouble. President Barack Obama wants to help save them with a new protected bee habitat corridor along I-35 spanning the US from Laredo, Texas to Duluth Minnesota. Catherine Winter, who lives in Duluth and keeps bees herself, tracked down some other bee enthusiasts to talk about the president's plan and their own efforts to protect the pollinators that help feed us all.
Monarch butterflies at the Pismo Beach Monarch Butterfly Grove in California.
A new plan announced by the US government would restore seven million acres of lost habitat for the monarch butterfly and other pollinating insects like honeybees, and scientists says the plan comes not a moment too soon for the troubled insects.
Attendees take pictures of the new Tesla Energy Powerwall Home Battery during an event at Tesla Motors in Hawthorne, California, on April 30, 2015.
Tesla is famous for its electric cars, and it's now moving into the world of batteries. The company introduced new systems designed to store power from unreliable wind and solar sources, hoping to make a fortune and change the energy market forever.
Kevin Sylvester's backyard ice rink in Toronto, Ontario.
Legend has it that hockey great Wayne Gretzky learned how to skate on an outdoor rink, just like millions of other Canadians. But climate change could make Canada's backyard rinks a thing of the past.

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