The UV Index provides a measure of the sun's ultraviolet radiation, a short wavelength of light invisible to humans, that can cause sunburns. Sunburns are a factor that can lead to deadly health ...

Some of these open clusters are pretty famous, such as the Pleiades cluster, also known as the Seven Sisters. This is ...

What if the secrets of the early universe are written not in distant galaxies, but in the gas and dust of our galactic ...

The extension of the Radiation Exposure Compensation Act to 2028 also doubles the amount of money victims could receive to ...

An in-depth look at managing sun damage through in-clinic procedures, lasers, and the right skincare. Plus, experts what sun ...

This article appears in the August 2025 print edition with the headline “The New Arms Race.” ...

Volcanic ash spewed by Lewotobi Laki-Laki volcano, and unseasonal thunderstorms, have caused flight delays, diversions and ...

Cosmic radiation occasionally contains enormous amounts of energy, but we don’t know why or where this radiation comes from.

Space ice” contains tiny crystals and is not, as previously assumed, a completely disordered material like liquid water, ...

"Space ice" contains tiny crystals and is not a completely disordered material like liquid water, as previously assumed, ...

There are far too many true believers among journalists, all eager to join AP’s Seth Borenstein in declaring this the ...

The research on black carbon needs to be updated as more becomes known about the aerosol, and that makes tracking wildfire ...