Public research university in Tucson, founded 1885
Researchers have detected erythrulose, a four-carbon sugar, in the interstellar medium near the Milky Way’s center. The finding supports theories that sugars essential to life could form in space and arrive on Earth via comets and asteroids. The study, published in Nature Astronomy, suggests that millions of tonnes of erythrulose may have rained down on Earth during the Late Heavy Bombardment.
A collection of articles shows record heat-related deaths across Europe and North America linked to a warming climate and El Niño, with officials expanding cooling programs and researchers urging responsible media portrayal to shape urgency. The data indicate rising temperatures and strained infrastructure, while experts forecast more extreme conditions ahead.
Prolonged heat across the continental U.S. has continued into August, with nighttime temperatures remaining unusually high. NOAA reports record-setting July temperatures and a hotter-than-average pattern linked to climate change and a strengthening El Niño. Experts warn that heat will persist and intensify, contributing to drought, fires, and health risks.
European wildfires have unearthed World War II munitions in France, Belgium, Germany and the Netherlands. Heat and drought have triggered detonations and required bomb-disposal teams to work amid flames. Experts warn climate-driven fires are reactivating dormant weapons, turning forests into dangerous fronts.