With more than 300 people injured and at least 24 killed, government weather experts confirmed the twister that plowed through Moore, Okla., Monday was an EF5, which put the tornado in the most powerful classification. Scott Pelley reports on the latest from the ground in Moore, Okla.
The bees are a part of a research project sponsored by the European Union.
The explosion was so bright that it could be seen by the naked eye all the way from Earth.
Researchers say the possibility of cloning tissue can help fight health problems, but others questio...
The US Navy successfully launched an unmanned drone -- the bat-winged X-47B -- off the deck of an ai...
Canadian spaceman Chris Hadfield returns to Earth along with two other astronauts after a half-year ...