HAVANA — Cuban officials on Monday lowered flags before dawn to mourn 32 security officers they say were killed in the U.S. weekend strike in Venezuela, the island nation’s closest ally, as residents ...

Add Yahoo as a preferred source to see more of our stories on Google. Artistic impression of the Electrostatic Tractor during an Earth encounter. (CREDIT: Fabio Annecchini & Dario Izzo) A dead ...

A dead satellite can become a high-speed hazard in an orbit that is already packed with working spacecraft. That risk is why engineers at the University of Colorado Boulder are building what sounds ...

This is the time of year when many of us hail “peace on earth” and earnestly repeat lines about “good will to all.” So maybe it’s also a moment to hold ourselves accountable for our collective ...

A painting of the First Battle of Panipat, which was fought between the invading forces of Babur against Ibrahim Khan Lodi, the Sultan of Delhi, in Panipat, north India, on April 21, 1526, shows the ...