News

Physics

Tiny, sunlight-powered aircraft could soar beyond airplanes’ reach

Microfliers levitate when hit with light, in conditions like those high in Earth’s atmosphere.

Health & Medicine

Making masks fit better can reduce coronavirus exposure by 96 percent

Double masking, rubber bands and other hacks can produce a tighter fit and prevent aerosol particles that can carry coronavirus from getting through.

Astronomy

The number of Milky Way nova explosions per year has been pinned down

Knowing how frequently these stellar eruptions occur will help determine their contribution to the galaxy’s chemical makeup.

Archaeology

Stonehenge may have had roots in a Welsh stone circle

Ancient migrants to southern England brought the makings of the iconic monument with them, researchers suspect.