Californium, a metal first synthesized in 1950, is the world's most expensive material due to its extreme rarity and its applications in medicine, industry and security. The metal, first ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

The neutron spectrum of spontaneous fission of californium-252; 1–5. Decay data for radionuclides used as calibration standards. Part 2. Neutron activation: 2–1. Thermal neutron cross-sections and ...