This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

Nearly extinct last century, grizzly bears are back in the northern Rockies, and some say it's time to lift the protections that helped them recover. They point to recent grizzly encounters as evidence.

This week, by boat, bus and jetliner, Papua New Guinea villagers are converging on Bali, Indonesia, to seek help from the more than 180 nations gathered at the U.N. climate conference.

Nearly extinct last century, grizzly bears are back in the northern Rockies, and some say it's time to lift the protections that helped them recover. They point to recent grizzly encounters as evidence.

Since President Bush slipped the seldom-heard term "switchgrass" into his 2006 State of the Union Address, the prairie grass has been in vogue.

Nearly extinct last century, grizzly bears are back in the northern Rockies, and some say it's time to lift the protections that helped them recover. They point to recent grizzly encounters as evidence.

Nearly extinct last century, grizzly bears are back in the northern Rockies, and some say it's time to lift the protections that helped them recover. They point to recent grizzly encounters as evidence.

Victims of climate change, real and potential, appealed Tuesday for a vast increase in aid to protect them from and compensate them for rising seas, drought and other likely impacts of global warming.

Researchers around the globe are part of an expanding race to trap greenhouse gases and bury them deep underground, an experimental and costly technology known as carbon capture and storage.

The number of people threatened by coastal flooding due to climate change could triple to 150 million by 2070 and the value of exposed property  could balloon to $35 trillion, a new report estimates.

Nearly extinct last century, grizzly bears are back in the northern Rockies, and some say it's time to lift the protections that helped them recover. They point to recent grizzly encounters as evidence.

The number of people threatened by coastal flooding due to climate change could triple to 150 million by 2070 and the value of exposed property  could balloon to $35 trillion, a new report estimates.

The number of people threatened by coastal flooding due to climate change could triple to 150 million by 2070 and the value of exposed property  could balloon to $35 trillion, a new report estimates.

The number of people threatened by coastal flooding due to climate change could triple to 150 million by 2070 and the value of exposed property  could balloon to $35 trillion, a new report estimates.

The number of people threatened by coastal flooding due to climate change could triple to 150 million by 2070 and the value of exposed property  could balloon to $35 trillion, a new report estimates.