Happy International Polar Bear Day! For 21 years, conservation nonprofit Polar Bears International has celebrated these ...

In February 2025, a 6-year-old child died of measles in Texas, marking the first death from the disease in the United States in a decade. Shortly after that, another school-age child died from it.

New research suggests that super-agers generate twice as many neurons as typical older adults. But you don't have to be a ...

An actuarial life table details the likelihood of an individual dying within the next year. Discover how it predicts mortality risks and helsp determine pricing.

Ancient linkups may have happened more frequently between female humans and male Neanderthals, according to an new genetic analysis. Scientists know that Neanderthals and humans mated because there is ...

Mars’ frozen ice caps may be time capsules for ancient life. Lab experiments show that key building blocks of proteins can survive tens of millions of years in pure ice, even under relentless cosmic ...

On Feb. 20, NASA successfully conducted a countdown test for the Artemis II mission. It aims to send humans beyond low Earth orbit and around the Moon for the first time in over 50 years. The mission ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified approach for measuring the value of the Hubble constant. Published in ...

Mechanical clocks first appeared in northern Italy in the 13th century, following earlier methods of timekeeping like ...

Scientists Discover Evidence That Time Travel May Be Real and Already Happening ...