Oral-B says it has reformulated Glide dental floss to remove PTFE, a material linked to PFAS concerns Earlier studies and lab ...

For its hypersonic glide vehicle demonstrator, France is utilizing Onera’s S4 wind tunnel, previously used to study atmospheric re-entry of space vehicles and missile flight. Credit: Onera ...

When they first appeared, nuclear weapons were a game-changer. They first came as bombs that could be dropped from airplanes, then they became available as missiles and rockets too. Time, research, ...