A growing number of leading public health experts say it is OK for people who've been fully vaccinated to travel - while still exercising caution.
Fossilized plants found deep below the ice suggest the ice sheet disappeared at least once in the last million years.
Previously unseen footage from SpaceX reveals a new view of the SN10 Starship rocket bouncing when it lands on its landing pad.
Some astronomers think space object 'Oumuamua could have been an alien spaceship. But new research suggests it was a piece of a Pluto-like planet.
A Florida woman gave birth three weeks after her first COVID-19 shot. The baby may be first reported case to have antibodies from her mom's vaccine.
Overdose fatalities hit a record high during the 12-month period ending May 2020, with more than 81,000 deaths.
New studies suggest the coronavirus variant first reported in the UK, B.1.1.7, is linked to higher mortality rates than other strains.
SpaceX propels Falcon 9 booster for the ninth time, delivering to orbit a payload of Starlink satellites.
NASA released an audiotape of its rover zapping a rock this week, highlighting another example of the robot's successful trip to the red planet.
Airlines demand a negative COVID-19 test to fly, but don't mandate isolation before and after the result. That makes no sense.