The vibe at a gathering this week for blockchain enthusiasts felt decidedly less exuberant than its predecessor a year ago after dizzying swings in bitcoin. Read More
Big cities beset with gridlocked traffic, major regions producing coal, pockets of heavy industry encased by mountains—Europe’s air pollution hotspots are clearly visible from space on most sunny weekdays. Read More
Scientists say breathing the heavily polluted air in Mexico City these days is like smoking somewhere between a quarter- and a half-pack of cigarettes a day. Read More
On December 11, 2017, US President Donald Trump signed a directive ordering NASA to prepare to return astronauts to the Moon “followed by human missions to Mars and other destinations.” Read More
