A study of 2,495 older adults in Ireland found no association between estimated lifetime exposure to fluoridated household water and cognitive performance, though researchers said continued monitoring and future studies remain important.
The American Cancer Society now recommends regular PSA testing from age 50 for average risk men and from 45 for Black men and those with strong family histories, citing stronger evidence that screening can reduce prostate cancer deaths.
Researchers examining Levantine archaeological sites suggest that colorful stones, crystals, fossils, and weathered tools became prehistoric keepsakes, possibly helping ancient hominins preserve memories, recognize meaningful landscapes, and eventually develop mechanisms supporting autobiographical memory.
NASA is inviting people worldwide to flash Voyager 1’s call sign toward the sky as the spacecraft becomes the first human made object to reach one light-day from Earth on November 18, 2026.
November’s sky will feature the remarkably fast Leonid meteor shower, a full Moon appearing up to 14% larger, several visible planets, and the Hera mission’s arrival at asteroid Didymos and its moon Dimorphos.
Experts expect the US to lose measles elimination status as outbreaks surge and vaccination rates decline, but proven vaccines, stronger leadership, and carefully designed public health strategies could help the country interrupt transmission again.
The nearby Type Ia supernova SN 2026ahvu is approaching peak brightness, offering professional and amateur astronomers a valuable chance to track an explosion that could refine scientific understanding of crucial cosmic distance markers.
Laboratory experiments found that healthy corals can fuse with bleached members of the same genet, transferring algae that drive rapid recovery. Researchers are now investigating ways to reproduce that rescue without requiring direct coral contact.