MIT scientists turn immune cells into cancer killers inside the body

Scientists have discovered that fasting for just 24 hours increases a beneficial gut bacterium that helps the intestines regenerate after radiation damage. The preclinical findings could pave the way for new treatments that protect healthy tissue during cancer therapy, potentially without requiring patients to fast.

By modeling how a planet without life develops its atmosphere, astronomers hope to be able to better distinguish rocky planets without life from those that are inhabited.

A nuclear explosion might save Earth from a deadly asteroid, but new research suggests that hitting the wrong side could make the difference between success and disaster. Scientists found that an asteroid's irregular shape can dramatically affect how it responds to an X-ray blast, with deflection effectiveness varying nearly fivefold depending on the angle.

A major international study tracking more than 26,000 men found that very low testosterone levels were associated with an 18% higher risk of dying from cancer later in life. Surprisingly, testosterone itself showed no clear link to prostate cancer, although two other sex hormones did. Researchers believe low testosterone could be an important early warning sign of future health risks, particularly when levels fall below 8.6 nmol/L.