"The Sahel region's ability to produce food is not keeping pace with its growing population, and global warming will only exacerbate the imbalance, according to a new study."

"As sea ice melts and permafrost thaws, indigenous traditions are being forced to change, say researchers."

"Northwest tribes urge US and Canada to revise Columbia River Treaty to allow safe passage for salmon crossing dams."

"When Twa-le Abrahamson-Swan tested her Spokane, Washington, home for radon, she already knew about the dangers of the invisible, odorless radioactive gas."

"NBC 5 Investigates has analyzed data released by a Washington D.C.-based research group and found dozens of facilities across the Chicago area that store or use toxic chemicals which - if released in an accidental leak or explosion - could directly affect hundreds of thousands of schoolchildren throughout the city and suburbs."

"North Dakota’s oil rush brings cash and promise to reservation, along with drug-fueled crime"

"LA TUQUE, Canada — For years, members of the Atikamekw First Nation have watched trucks rumble through their traditional territory, carrying out load after load of timber, only to see the profits slipped into others’ pockets. Recently, exploration companies have begun searching for rare metal and gold deposits on the land, a vast stretch of Canadian wilderness nearly the size of Maine. And like many First Nation tribes, the Atikamekw have had enough."