Stories by Hans A. Bethe

Niels Bohr met with a Soviet agent in late 1945. Although some have accused Bohr of divulging nuclear secrets, a recently disclosed memo offers evidence to the contrary

When a large star runs out of nuclear fuel, the core collapses in milliseconds. The subsequent "bounce" of the core generates a shock wave so intense that it blows off most of the star's mass

President Reagan's "Star Wars" program seems unilkely ever to protect the entire nation against a nuclear attack. It would nonetheless trigger a major expansion of the arms race

The U.S. is now building a "light" ABM system. The authors argue that offensive tactics and cheap penetration aids could nullify the effectiveness of this system and any other visualized so far

Electrical forces bind the electron to the atom, but they cause nuclear particles to fly apart. The powerful cohesion of protons and neutrons must be explained by a wholly different phenomenon

In which the technical and strategic discussion of last issue is continued, and a proposal is made for a first step toward the international control of atomic weapons