Gravitational wave background could repair our broken understanding of the universe

Physicists may have an entirely new way to measure the rate of expansion of the universe, one of the biggest unsolved mysteries in cosmology, by harnessing the ripples in space-time predicted by Einstein. A new study suggests that the weak gravitational wave background produced by the mergers of large numbers of black holes across the […]

Vanuatu’s ‘barefoot volcanologist’ stands on Mount Yasur, spewing ash and sulfur, captured in award-winning photo

A photograph of an amateur volcanologist standing barefoot on a lava field on Vanuatu’s Mount Yasur has won the portrait category in this year’s Sony World Photography Awards open competition. Fine art and documentary photographer El Leontief captured Philip, the “barefoot volcanologist,” on Tanna, a remote Pacific island about 120 miles (190 kilometers) from Efate’s […]

Pain lasts longer in women and may be caused by immune cells

Pain is something most people experience after an injury such as an ankle sprain, surgery, or car accident. The pain usually goes away as the body heals. However, symptoms can last longer in women than in men, and women are more likely to develop chronic pain. For decades, differences in pain between men and women […]