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Researchers have found a way to make cancer-killing immune cells more powerful and precise. By adding specific signaling components, they boosted the cells' readiness to attack tumors. Surprisingly, briefly suppressing the cells with a drug before .. ...

Scientists have discovered that a protein linked to cell death is secretly driving the aging of blood stem cells in a completely different way. Instead of killing the cells, it damages their mitochondria, sapping their energy and weakening the immune ...

A rogue set of "zombie" immune cells may be driving aging and fatty liver disease by flooding tissues with inflammation. Researchers found these cells accumulate with age and high cholesterol--and can make up most of the liver's immune cells in older ...

The ozone layer has been on track to recover thanks to the Montreal Protocol--but a loophole may be holding it back. Chemicals still permitted for industrial use are leaking into the atmosphere at higher rates than expected. Scientists now estimate . ...

Researchers have discovered lithium hidden in pyrite within ancient shale rocks--an unexpected find that could reshape how we source this critical battery material. It raises the possibility of extracting lithium from existing waste, reducing the ...

A massive, nearly 20-year study tracking over 650,000 Americans with irritable bowel syndrome is raising new questions about the long-term safety of common treatments. Researchers found that some widely used medications--including antidepressants and ...

Scientists have discovered that methane in the open ocean is produced by microbes under nutrient-poor conditions, solving a long-standing mystery. As warming oceans reduce nutrient mixing, these methane-producing microbes may thrive. This could lead ...

New research suggests that aiming for a lower blood pressure target may deliver bigger heart health benefits than previously thought. Using large datasets and simulation models, scientists found that keeping systolic blood pressure below 120 mm Hg .. ...

A surprising new clinical trial has revealed that metformin--a cheap, century-old drug widely used for type 2 diabetes--may help people with type 1 diabetes in an unexpected way. While researchers initially hoped it would reduce insulin resistance, . ...

A long-running dinosaur mystery may finally be solved: Nanotyrannus, once dismissed as just a teenage T. rex, appears to have been its own distinct species after all. Scientists analyzed a tiny throat bone from the original fossil and discovered ...