DURING the last two years we have been using photographic plates (Ilford R 2 and New Halftone) for the study of cosmic rays at different altitudes. Both treated and untreated plates have been used ...

May 21, 2025 • We asked some of our trusted critics which upcoming books they are most looking forward to. Here are the fiction and nonfiction titles they picked. November 25, 2024 • Books We ...