The week in physics - Helium shortage; Monthly crossword

The Week in Physics Helium users brace as shortages begin Recycling systems are keeping many researchers afloat as prices rise and some suppliers ration helium. Toni Feder APR 30, 2026 Q&A: Ken Ono feared AI. Now he trains it. The mathematician wants AI to help researchers focus on creativity. Jenessa Duncombe APR 29, 2026 From the vault Thirty years of mesons Mesons have been predicted (in the first place, pi mesons by Yukawa in 1935), misidentified (mu mesons in cosmic rays) and discovered (pi mesons in cosmic rays), or at times discovered and not understood (the K mesons). Although the discovery of more mesons is expected, it seems unlikely that we are about to return to a traditional view of the fund… Robert Oppenheimer NOV 01, 1966 What can physicists do? Sandy Chilson teaches science in and out of the classroom Toni Feder MAY 01, 2026 Crossword: X marks the spot Doug Mar APR 30, 2026 ADVERTISEMENT New US visa & immigration policy guide Global talent has long powered the US science and engineering industry, but recent shifting policies are reshaping that foundation. Learn about the latest developments in this changing landscape with a new policy guide from AIP. View the guide now. Post a Job Get Job Alerts Browse All Jobs Team Director (Principal Investigator, Indefinite-term) RIKEN (Japan (JP)) View Job Postdoctoral research position in the fields of macromolecular chemistry & battery research (m/f/d) Max Planck Institute for Medical Research (Heidelberg (DE)) View Job AI Fellow Positions at Korea Institute for Advanced Study KIAS (South Korea) View Job Chief Executive Officer American Astronomical Society (Washington D.C.) View Job Scientist II Jet Propulsion Laboratory (Pasadena, California) View Job Chief Operations Officer Zero Point Cryogenics (Edmonton (City), Alberta (CA)) View Job Physics Today is published by the American Institute of Physics. To manage your AIP email preferences and newsletter subscriptions, click here. Or unsubscribe from all AIP emails. © 2026.0 American Institute of Physics Physics Today 1 Physics Ellipse College Park, MD 20740 +1 301 209 3100