Ice clouds in marine regions at high latitudes might form in warmer and drier air than was previously believed because of freezing induced by airborne particles that contain organic materials from ...

Particle physics is the study of the elementary building blocks of matter and radiation and their interaction. The fundamental particles are summarised by the standard model. This includes leptons ...

Contributed by Mario J. Molina, December 19, 2019 (sent for review September 23, 2019; reviewed by Robert L. McGraw and Fangqun Yu) High concentrations of ultrafine particles (UFPs), approaching 1 ...

Researchers have detected particle pairs emerging directly from the vacuum during high-energy proton collisions, providing the clearest evidence yet that mass can arise from empty space. The finding ...