The authoritative guide to ensuring science and technology make life on Earth better, not worse.

satellite images

satellite view Aegean Sea

Sun glint—bane of climate modellers who use satellite images—may have silver lining

By Gemma Tarlach | Climate Change

Close-up of new cooling water pump house and in-filled water channel at North Korea's Yongbyon nuclear facility. Credit: Airbus Defense and Space/38 North

North Korea is not denuclearizing. Yet.

By Dawn Stover | Nuclear Weapons, What We’re Reading