"One of the world’s smallest ethnic groups is finding its cultural traditions on the wrong side of Mongolian law, putting its very existence in peril."

"Across the U.S. people are trying to reduce inequities in how environment affects physical well-being".

"President Barack Obama on Tuesday pledged his commitment to a full recovery from floods that struck south Louisiana this month, leaving 13 people dead and thousands more displaced."

"CROW RESERVATION, Mont.— Alisara Knaub saw firsthand how contaminated water can upend your life."

"For Native American tribes, water more than sustains—it is a sacred, living thing to be revered and protected. It is their cultural touchstone. Yet tribes across the United States face water pollution problems that make their members sick, taint their traditions and epitomize the weight of modernity squeezing spiritual connections to a breaking point."

"Negotiators for two Native American tribes and the state of Oklahoma said Wednesday they have reached a settlement that would end a modern-day water rights and tribal sovereignty dispute that has its roots in the 19th century."

"Brazil's environmental regulator Ibama decided on Thursday to shelve the environmental license request for a hydroelectric dam on the Tapajos River in the Amazon, a project that had been opposed by indigenous tribes and conservation groups."

"As government works to save big cats from extinction, indigenous forest dwellers pursue peaceful coexistence for man and beast".

"Beneath the streets of Boston, two robots named Mario and Luigi inspect the flow of human waste, collecting data on city residents."

"Times are tough for Chesapeake oysters. For one thing, they used to be bigger. "If you look at what people were saying back in the 1600s and 1700s about oysters, people had to cut them in half before they could even eat them," says Denise Breitburg, an ecologist with the Smithsonian Environmental Research Center."