Scientists are increasingly worried we may be witnessing the start of the “sixth mass extinction” – the first to be caused by ...

Earth’s history has been shaped by five mass extinctions—catastrophic periods when life changed so dramatically that entire ...

When Dolly the sheep – the first cloned mammal – was born 30 years ago, she became one of the most famous animals in science ...

With a bulging head that looks like it swallowed a gavel, there's no mistaking the animal: It’s a hammerhead shark. Across the globe, there are more than nine hammerhead species, many of which are ...

Throughout human ecological history, we have played a variety of roles within ecosystems around the world. In this so-called ...

The Mangshan pit viper, a rare and highly venomous snake confined to a handful of mountain forests in China’s Hunan and ...

New research uncovers a lost world of strange crocodile relatives that once thrived across Australasia alongside early humans.

Scalloped hammerhead shark, Sphyrna lewini, swimming above a reef. Cocos Island, Pacific Ocean, Costa Rica. Greg Lecoeur, ...

What is a mass extinction – and how many of them have there been? Will Newton takes a look the 'big five' extinction events ...

With their killer instinct and feline prowess, the big-cat family represents some of the world's most impressive animals. All ...