Twin birthrate has increased by around one-third in last 40 years – but what exactly is causing the 'twin trend'?

Tens of millions of people are still drinking arsenic-contaminated water 30 years after ‘the greatest mass poisoning in ...

Trump's executive order to halt much of the US's foreign aid is likely to have ripple effects across the world, as Dr Doug ...

A new area equivalent in size to Sweden has been mapped in the Arctic Ocean, contributing to the project's aim to map global ...

Large-scale study finds crevasse sizes on Greenland ice sheet increasing in size and depth – and may cause more rapid loss of ...

Discover more about sunken villages across Europe – from Wales to Greece – and how exactly their existence came about ...

From thunderstorms in Texas to Indonesian volcanoes, these images from the Weather Photographer of the Year Awards showcase ...

From Lunar New Year to Ethiopia's Enkutatash celebrations, discover the variety of countries which celebrate New Year's Day ...

Discover the countries with the most 'living languages' – at number one is a nation that speaks more than 800 different dialects ...

AI has been used for countless reasons to protect our planet: from systems created to monitor illegal logging in West Africa, ...

From ambling badgers to stoats in snow, discover the winner and runners-up of this year's Wildlife Photographer of the Year ...

Reconnect Island eco resort offers an exclusive gateway for divers to explore Central Sulawesi's untouched marine ecosystems ...