What to know about the Caesars, the gigantic truck-mounted artillery units France sent Ukraine
We’re getting closer to understanding why the sea sometimes glows
Why the US Army wants an ‘aerial tier network’ for better communications
Accessible at-home COVID tests are on their way
Why Microsoft is rolling back its AI-powered facial analysis tech
See inside Glen Canyon Dam as Lake Powell levels drop
The world’s largest hybrid ship will set sail in 2024
Ever heard of giant bacteria? This new species is way bigger and weirder.
How Apple wants to kill those annoying CAPTCHA tests
Do you need a daily multivitamin? Probably not, says national health task force.