Families with three or more boys, for example, are more likely to have another boy than a girl as the next child.

Burning of fossil fuels, forests and grasslands sends small particles called aerosols into the air. High levels of aerosols can create a thick haze, cutting back on sunlight reaching Earth’s surface ...

Surgeons have developed two low-cost techniques to revive the hearts of people who wish to donate their organs after they die ...

Certain patterns of brain activity during awakening correlate with a lower likelihood of the bleary-eyed state called ‘sleep ...

The Langlands programme has inspired and befuddled mathematicians for more than 50 years. A major advance has now opened up ...

Emerging dangers are reshaping the landscape of nuclear deterrence and increasing the threat of mutual annihilation.

Long-awaited results suggest that mitochondrial donation can prevent babies from inheriting diseases caused by mutant ...

Island life has given the world’s largest bats their gargantuan wingspans, which can reach nearly 2 metres 1.

Study reveals how the tech behemoth is using the motions sensors on phones to expand quake warnings to more countries.

A bacterially produced molecule circulates in the bloodstream and increases the risk of cardiovascular disease by hijacking ...

As with DeepSeek’s models, Kimi K2 is open-weight, meaning it can be downloaded and built upon by researchers for free. It ...

The next generation of deep-brain stimulation automatically corrects the precise brain waves that create symptoms of ...