Amelia Earhart, whose 115th birthday is celebrated on Google's home page Tuesday, disappeared with her navigator over the Pacific Ocean in 1937. A new search for her remains has returned nothing definitive.
Sally Ride was very private, but she inspired a generation of female scientists with her historic shuttle flight in 1983. Sally Ride, a physicist, proved that women could be equal partners with men in space.
Researchers say they've created a jellyfish that's one part artificial, one part biological. Creation of the 'pseudo organism' could yield new insights into medical research – or even cleaning up environmental pollution.
Polar and brown bears diverged between 4 million and 5 million years ago, but they continued to interbreed when the climate warmed, finds a new study led by the University at Buffalo and Penn State. Now, there is evidence that it is happening again.