Putin has 2, maybe 3, daughters he barely ever talks about — here's everything we know about them

Russian president Vladimir Putin has tried to keep his personal life out of the...

Photos show the damage caused by the massive oil spill in Mauritius

More than 1,000 tons of oil has leaked into the Indian Ocean, and environmentalists worry...

The history of the narwhal, the 'unicorn of the sea' that scientists still barely understand

A narwhal tusk was used against a terrorist in London in November. Here's the wild...

How long it took to develop 12 other vaccines in history

Scientists are working to quickly develop a Covid-19 vaccine, but it could take years....

Photos show incredible coronavirus-themed drone messages flying over South Korea

South Korea was praised early on for quickly controlling its coronavirus outbreak with...

Stunning photos and videos show the protests against police brutality from the sky

For two weeks, hundreds of thousands of Americans have gathered to protest police...

Photos show how Wuhan tested 6.5 million people for the coronavirus in 9 days

On May 11, the Chinese city of Wuhan ordered all 11 million of its residents to be tested...

How climate change could make infectious diseases even more difficult to combat in the future

Covid-19 may not be the only pandemic we have to fight. Researchers fear that climate...