Florida startup Star Catcher snags $12 million to help develop 1st off-Earth energy grid
A slight temperature drop makes Tuesday the world's second-hottest day
Africa's demand for cooling systems is expanding. But regulating the industry is a struggle
A plan to replenish the Colorado River could mean dry alfalfa fields. And many farmers are for it
NASA, Boeing discussing Starliner astronaut mission today: Watch it live
Extreme heat is breaking global records: Why this isn’t ‘just summer,’ and what climate change has to do with it
New images revealing the invisible side of the universe celebrate the work of a mission in peril
Jupiter's surreal clouds swirl in new van Gogh-esque view from NASA's Juno probe (photo)
