"CLARKSVILLE, Tenn. -- Conservationists have built an artificial bat cave deep in the Tennessee woods to see if it can be a blueprint for saving bats who are dying by the millions from a fungus spreading across North America."

"An environmental group asked the U.S. government on Thursday to consider classifying the orange clownfish -- Nemo, to a whole generation of children -- as endangered."

"KINSHASA, Democratic Republic of Congo -- Scientists have discovered a new species of monkey in a remote forested part of the Democratic Republic of Congo, only the second new species of monkey to be found in Africa in the past 28 years."

"The emerald ash borer, an invasive beetle that has destroyed millions of trees in North America since being accidentally introduced from Asia, has been identified in Massachusetts for the first time, state officials said on Wednesday."

"Environmentalists sued the Obama administration on Wednesday seeking federal safeguards for seals that rely on vanishing Arctic sea ice and accusing the government of dragging its feet in listing the marine mammals under the Endangered Species Act."

New techniques may allow purebred bison calves bearing the genes of the animals that originally populated North America to be reproduced disease-free. Most of today's bison descended from animals cross-bred with domestic cattle.

Ancient chestnut trees in Europe are vanishing. "The culprits: a moth that produces leaf-eating larvae and a bacterium that makes trunks bleed and die. ... A cure? Not immediately in sight."

"Gray wolves in Wyoming, the last still federally protected in the northern Rockies, will lose endangered species status at the end of next month, opening them to unregulated killing in most of the state, the U.S. government said on Friday."