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

boost-glide vehicles

US Advanced Hypersonic Weapon test

Hypersonic missiles: Three questions every reader should ask

By Ivan Oelrich | Analysis, Nuclear Risk

Going too fast: Time to ban hypersonic missile tests?: A US response

By Mark Gubrud | Nuclear Risk

Going too fast: Time to ban hypersonic missile tests?: A Chinese response

By Tong Zhao | Nuclear Risk

Watch the 2025 Doomsday Clock announcement on January 28