CAPE CANAVERAL, Fla. - Three years after landing in a giant Martian crater, NASA's Curiosity rover has found what scientists call proof that the basin had repeatedly filled with water, bolstering chances for life on Mars, a study published on Thursday showed.
WASHINGTON - DNA extracted from the skull of a man buried 4,500 years ago in an Ethiopian cave is providing new clarity on the ancestry of modern Africans as well as shedding light on an influx of people from the ancient Middle East into the Horn of Africa.
CAPE CANAVERAL, Fla. - An unmanned Atlas 5 rocket blasted off from California on Thursday to put a classified spy satellite and 13 tiny experimental spacecraft into orbit for the U.S. government. | Video
CHICAGO - Cancer researchers are just beginning to understand the ramifications of the fundamental discoveries behind the 2015 Nobel Prizes in Chemistry, which were awarded on Wednesday to three scientists for explaining how cells repair mistakes in DNA that occur when cells divide. | Video
Three scientists from Sweden, the United States and Turkey won the 2015 Nobel Prize for Chemistry on Wednesday for working out how cells repair damaged DNA, providing new ammunition in the war on cancer. | Video
WEST LAFAYETTE, Ind. - Football is a dangerous sport. Even with the best protective gear, sprained knees, pulled muscles and an occasional broken bone are part of the game. But seven years of research into the impact of head trauma in high school players points to new dangers that parents will find extremely alarming. | Video
SANTIAGO - After eight years of drought which left fields parched and ski resorts dry, a burst of wet weather, likely triggered by the El Niño phenomenon, has been welcomed in central Chile.
WASHINGTON - They come in many shapes, sizes and hues, from Cuba's tiny bee hummingbird to the flightless ostrich of Africa's plains, Antarctica's emperor penguin and the Southern Ocean's majestic wandering albatross.
JERUSALEM - An Israeli team competing in a race to the moon sponsored by Google has signed a with California-based SpaceX for a rocket launch, putting it at the front of the pack and on target for blast-off in late 2017, officials said on Wednesday.
WASHINGTON - (This October 6, 2015 story was refiled to clarify the number of engines affected by the ban in the seventh paragraph to 9 not 24)
ABUJA - Ten people have been quarantined after coming into contact with a patient with Ebola-like symptoms in the southern Nigerian city of Calabar, officials said on Thursday, a year after the country was declared free of the deadly disease.