Campo Kumeyaay Nation, a small tribe in the desert mountains east of San Diego, benefitted from the casino that opened in 2001. Now it wants to build a 25-turbine wind farm called Kumeyaay 1, the only large-scale renewable energy plant on Indian land in the country. But a big problem is the tribe's tax status: as a sovereign nation it can not receive the federal tax credits that make such projects feasible.

"Above the Arctic Circle in Canada near Greenland, five Inuit villages have won a court order that blocks a German icebreaker from conducting seismic tests of an underwater region that abounds with marine life -- and possibly with oil, gas and minerals."

"The Navajo Nation's proposed coal plant always rested on shaky ground. Now, it may collapse entirely."

A fifth of Pakistan is under water, and more than 14 million victims are flooded out. The Taliban and terror-linked groups are helping people more rapidly than the U.N. and western nations. The floods seem to be verifying predictions of climate refugees and climate change as a threat to global and U.S. security. The current government of Pakistan may be failing. Will global warming cause a nuclear-armed nation to be taken over by terrorists?

Walruses in the Arctic depend on sea ice as a base for hunting and transportation. The native Yupik and Inupiat people have depended on the walrus for meat, clothing, and tools. Now the climate-driven shrinking of sea ice is threatening both walruses and humans.

A Penn State anthropologist puts forth a new hypothesis: that the nearly universal human tendency to bond altruistically with animals is a unique trait that has evolved because it gives us many advantages.

"Continued climate change will drive Mexican farm workers to migrate to the United States in greater numbers, environmental experts predicted on Monday."