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Einstein's abandoned cosmological constant made a spectacular comeback when astronomers discovered that the universe's expansion is accelerating. It now sits at the heart of our best cosmological model--a model that works extraordinarily well, yet .. ...

Childhood criticism can leave people carrying a fear of failure long into adulthood, but new research suggests those emotional patterns may be surprisingly flexible. Young adults who revisited painful memories through imagery-based therapy showed ...

Kratom use and serious health problems linked to it have risen dramatically across the United States over the past decade. Poison center reports jumped from just 19 cases in 2010 to more than 1,200 in 2023, while severe outcomes--including life ...

Scientists studying three artisan British cheeses found that the microbes responsible for their distinctive flavors may also offer surprising benefits for gut health. As the cheeses matured, helpful bacteria transformed their aromas and textures ...

A low-fat vegan diet may help people lose weight without counting calories, shrinking portions, or feeling constantly hungry. In a 16-week clinical trial, people eating mostly fruits, vegetables, grains, and legumes consumed about 357 fewer calories ...

Astronomers may finally have a clue to what happens to the mysterious "little red dots" that crowded the early universe. By studying a spiral galaxy nicknamed the "Saguaro," researchers found a compact, bright red center that closely resembles these ...

Scientists are searching some of Earth's oldest rocks for tiny fossils that could reveal how simple microbial life made the extraordinary leap toward plants, animals, and other complex organisms. Solving that ancient mystery may also help determine . ...

Caltech scientists have created ultra-low-loss optical pathways on silicon chips that approach the efficiency of fiber optics and dramatically outperform existing technology at visible wavelengths. The breakthrough could unlock more powerful lasers, ...

Researchers have uncovered a surprising way triple-negative breast cancer may turn the body against itself. Tumors appear to recruit macrophages--immune cells normally involved in healing and fighting infection--and use them to release a protein ...

Researchers combined synthetic DNA with a semiconductor to create an ultra-low-power memory device capable of storing and processing information in the same place. The bio-hybrid technology could eventually help make AI systems and next-generation .. ...