[en] Alfred Loomis may well be remembered as the last of the great amateurs of science. He had distinguished careers as a lawyer, as an Army officer and as an investment banker before he turned his full energies to the pursuit of scientific knowledge, first in the field of physics and later as a biologist. By any measure that can be employed, he was one of the most influential physical scientists of this century: he was elected to the National Academy when he was 53 years old; he received many honorary degrees from prestigious universities; and he played a crucial role as director of all NDRC-OSRD radar research in World War II

[en] A critic on the inside says that a treaty is vital to world security, that it is technically feasible, and that the nuclear weapons laboratories should end their opposition to the idea

[en] To maintain the steady increase in collision energy achieved during the last fifty years, after the lifespan of currently planned accelerators and storage rings, will take new, still conjectural, ideas

[en] Problems in quantum chromodynamics that are currently impossible to solve may have useful approximate solutions when one assumes that quarks can have a large number, N, of ''color'' instead of three

[en] Plasmas confined by magnetic fields in a toroidal geometry can reach confinement times, densities and temperatures approaching those needed for producing useful fusion energy

[en] Video and audio from hundreds of smartphones and dashboard cameras combined with seismic, acoustic, and satellite measurements provide the first precise documentation of a 10 000-ton asteroid explosion

[en] Although regulators say that current protections are adequate, the US government continues to pay for extra security features for facilities that hold radiological materials

[en] Despite progress in reducing stockpiles after the end of the Cold War, the disturbing actions of some nations could spread nuclear weapon capabilities and enlarge existing arsenals

[en] The scientist-philosopher’s critique of Newtonian mechanics was informed, in part, by a startling phenomenon he experienced as the train he was riding negotiated a sharp bend

No abstract available