The government's decision to allow free travel to and from Greece last summer could have had a significant impact on the spread of the virus, according to a Public Health England study quietly published this week.
Facebook will add labels to all posts about COVID-19 vaccines to show additional information from the World Health Organisation.
NASA's Perseverance rover has sent back the first sounds of it driving on Mars - giving further insight into the Red Planet's environment.
Elon Musk has said his company would be shut down if its cars were used for the purposes of spying.
An Australian police chief has suggested a phone app could be developed to document sexual consent as a way to improve conviction rates for sex crime cases.
A sonic boom-type explosion heard across France, Wales, and England this weekend has been tied to an extremely rare "daytime fireball" meteor believed to have crashed into the Bristol Channel.
NASA has completed a major test on a rocket that could take humans back to the moon.
The size of the British army will be reduced to 72,500 personnel, and the RAF will have its air cargo and personnel carriers drastically cut as part of the biggest overhaul of the armed forces in decades.
NASA's next astronaut, Mark Vande Hei, may have to spend an entire year aboard the International Space Station (ISS) due to a Russian space tourist taking part in a film.
While many questions remain on the origins of life on Earth, scientists in the US and UK now believe that lightning strikes may have played an essential role.