Study finds AI boosted homework scores 18%—then tanked exam results 20%

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Millions of Americans have a blood test every year to measure LDL, often called “bad” cholesterol. But new research from Northwestern Medicine suggests that another test may do a better job of identifying who needs more aggressive treatment to reduce the risk of heart attacks and strokes. The study, published in JAMA, found that measuring…

An artist’s impression of an exoplanet orbiting its star. Credit: NASA/JPL-Caltech Scientists have discovered a rocky planet that is likely to have an atmosphere — and could be a host for life. In a paper published this week in Science1, researchers report their observations of helium escaping from the atmosphere of a rocky exoplanet called…

Scientists have uncovered how a toxin produced by a common gut bacterium gains access to colon cells, solving a mystery that has puzzled researchers for more than 15 years. The discovery not only explains how the toxin begins damaging the colon, but also points to a possible new way to block its effects before they…

In a recent study, researchers dated a historic lahar called the Electron Mudflow to the summer of 1507, establishing a way to determine when past geologic events around the Puget Sound occurred Megan Gannon | Archaeology Correspondent July 21, 2026 12:48 p.m. Mount Rainier, an active volcano about 60 miles away from Seattle, has sent…