Doug Loverro, who led NASA's human spaceflight division, has resigned after just six months on the job. Loverro quit a week before SpaceX is scheduled to launch its first passengers - two NASA astronauts - on a mission called Demo-2. More »    

New analysis by Russian outlet Mediazona found that healthcare workers in the country make up 7% of COVID-19 fatalities, equal to one in every 15 deaths from the virus. More »    

There's been a steady decline in births in the US, and 2019 recorded the fewest number of births in 35 years. Experts have warned the trend could lead to a "demographic time bomb." More »    

Latvian design studio Zeltini created the Z-Triton, an amphibious tiny home. The electrically powered vehicle can travel over land or water, and has a tiny kitchen and room to sleep. More »    

Facebook surged more than 6% Wednesday to a record high of about $US230 per share. The company announced a day earlier it would roll out Facebook and Instagram shops starting Wednesday. More »