A majority of Japanese and American parents said their teenagers used mobile devices too much.
Sputnik satellite on display at a museum.
The bristlecone pine is the oldest individually growing organism.
The scientists were able to see inside our biological clock.
Facebook has announced plans to bar malevolent advertising.
UAS can act as a second pair of eyes.
Italian tenor Andrea Bocelli at the Verdi Theatre.
“The Emoji Movie”
The aircraft set an altitude record for powerless flight.
It has killed more than 6 million bats across North America since 2007.