4-year-old discovers impressive dinosaur footprint on Wales beach

SpaceX to fly first mission to space with an all-civilian crew later this year

48,000-Year-Old Fossils Hint at Neanderthal-Human Interbreeding

A pair of spacewalking astronauts completed a four-year effort to modernize the ISS's power grid. The space station is now equipped with 24 lithium-ion batteries to store power collected by the solar panels. NASA expects these batteries to last the rest of the space station's operating life.