WHO said the decision builds on earlier emergency approvals and reflects the continued need for affordable, fast COVID-19 testing even after the pandemic’s emergency phase.

It's well-known dogs can sense human emotions, but how do they do it? And what are the implications for how we behave around them?

China is estimated to have more than 600 nuclear warheads, a figure the U.S. predicts will exceed 1,000 by the end of the decade.

Companies are coming up with plans to block out the sun - Private companies are jumping into the race to deploy particles to ...