The Associated Press
AP Top Science News at 10:32 p.m. EDT

Scientists find 3.7 billion-year-old fossil, oldest yet
Scientists have found what they think is the oldest fossil on Earth, a remnant of life from 3.7 billion years ago when Earth's skies were orange and its oceans green....

Africa's elephants rapidly declining as poaching thrives

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HONOLULU (AP) -- The number of savanna elephants in Africa is rapidly declining and the animals are in danger of being wiped out as international and domestic ivory trades drive poaching across the continent, according to a study released Wednesday....

Governor, lawmakers reach deal for California climate funds
SACRAMENTO, Calif. (AP) -- California lawmakers approved a $900 million spending package devoted to environmental programs Wednesday, hours after Gov. Jerry Brown and Democratic legislative leaders agreed to spend nearly two-thirds of the available money generated by the state's cap on carbon pollution....





Nobel Prize winner Roger Tsien dies; helped track cells
SAN DIEGO (AP) -- Roger Tsien, a University of California, San Diego professor who shared the 2008 Nobel Prize in chemistry for helping develop fluorescent markers that could tag cancer cells or track the advance of Alzheimer's disease in the brain, has died. He was 64....

Stem-cell doctor did surgeries with 'inadequate' proof
LONDON (AP) -- An independent commission investigating Italian stem-cell scientist Dr. Paolo Macchiarini, whose work was once considered revolutionary, says there were numerous problems in how he treated patients and that the scientific basis for his work was "inadequate."...

At Lake Tahoe, Obama links conservation to climate change
STATELINE, Nev. (AP) -- Standing beneath the forest-green peaks of the Sierra Nevada, President Barack Obama drew a connection Wednesday between conservation efforts and stopping global warming, describing the two environmental challenges as inseparably linked....

Lake Tahoe: A look at tourist haven that hosts annual summit
STATELINE, Nev. (AP) -- The extraordinary efforts put into healing Lake Tahoe in recent decades show it's possible to preserve the country's greatest natural treasures for future generations, President Barack Obama said Wednesday....

APNewsBreak: US set to destroy big chemical weapon stockpile
DENVER (AP) -- The U.S. Army plans to start operating a $4.5 billion plant next week that will destroy the nation's largest remaining stockpile of mustard agent, complying with an international treaty that bans chemical weapons, officials said Wednesday....

Study: Ohio's abortion pill law led to worse health outcomes
COLUMBUS, Ohio (AP) -- Ohio's restrictions on the so-called abortion pill led to a higher rate of side effects, more doctor visits and additional medical treatment for patients, according to a new study....

Rare whale's recovery hurt by entanglements, scientists say
PORTLAND, Maine (AP) -- The ability of an endangered whale species to recover is jeopardized by increasing rates of entanglement in fishing gear and a resultant drop in birth rates, according to scientists who study the animal....