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A century-old theory about the origins of life on Earth may be wrong. New research from the University of Cambridge suggests that comets traveled too fast and struck at unfavorable angles for the fragile molecules needed for life to survive, making . ...

Global fossil fuel emissions are projected to fall in 2026 as renewable energy and electric vehicles gain ground, but rising emissions from deforestation threaten to push total CO2 emissions to a new record. Scientists warn that the world's remaining ...

After more than a year of simulated life on Mars, four NASA volunteers have finally emerged from isolation, bringing a remarkable space exploration experiment to an end. Their experiences growing food, conserving resources, and overcoming Mars-like . ...

NASA is putting $500,000 on the line in a new competition to accelerate the development of advanced electric rocket engines for satellites and future space exploration. The AMPERE Challenge will reward up to two U.S. companies with cash prizes and .. ...

Even when bad cholesterol is brought down to healthy levels, some people remain at risk of heart attacks, and scientists may have discovered why. Researchers identified two types of fat-carrying particles that appear to promote inflammation and ...

A surprising discovery suggests that some early signs of Alzheimer's disease may begin outside the brain. Using miniature laboratory systems made from human cells, scientists found that genetic mutations associated with inherited Alzheimer's can ...

CERN scientists have finally found evidence of a particle decay so rare that it happens only once in roughly 10 billion decays, ending a search spanning more than 40 years. The breakthrough could help physicists uncover hidden particles and forces .. ...

Scientists have uncovered a hidden gut-to-brain dopamine pathway that helps explain why bitter coffee and other initially unpleasant flavors can become favorites over time. The discovery reveals how the brain learns to crave certain foods and could . ...

Scientists have discovered that pantethine, a readily available vitamin B5 derivative, can calm overactive immune cells and may help fight psoriasis. The supplement prevented psoriasis in mice and showed promising results in a small human trial, ...

Scientists have discovered that gut bacteria can feed on the protective mucus lining your intestines, producing potentially harmful compounds, but fiber helps keep this activity in check. Overlooked proteins in plant foods also help shift gut ...