The world is currently experiencing its sixth mass extinction, with potentially thousands of species lost every year.

But some extinct animals are even bigger. Let’s take a look at the eight biggest animals that have gone extinct. 1. Megalodon. Megalodons were sharks so huge they would dwarf modern sharks.

Some researchers argue that efforts to bring back long-gone species could detract from conservation efforts to save existing animals and even increase the risk of biodiversity loss, and that ...

The dire wolf went extinct around 10,000 years ago. The recent claim that a U.S. biotechnology company resurrected the long-extinct dire wolf through genetic engineering seemed to shock the ...

From prehistoric predators to forgotten giants, some extinct species still have what it takes.

Despite the rediscovery news, extinction is still a massive threat to thousands of species. The IUCN lists more than 40,000 species as threatened, with more than 9,000 species considered ...

What we lose when animals go extinct. ... animals housed in zoos or special breeding facilities are among the last remaining members of their species. In some instances, they are the only members.

Some vanishings have inspired public outcry, such as the 2016 extinction declaration for the tiny Christmas Island pipistrelle bat species, last seen in 2009. It was Australia's first recorded ...

De-extinction, the science of resurrecting extinct species, is progressing in leaps and bounds. Here are six creatures that researchers could bring back to life — and one they've already revived.

Among some of the extinct species Schlossman photographed, only one specimen was left – as with a small Mexican ray-finned fish, whose inclusion reflected the book’s more harrowing message.

In a mass extinction event some 40,000 years ago, Australia lost 90% of its large species, including nearly two dozen kinds of kangaroos. Two theories suggest why.

Global population trends among 71,000 animal species show nearly half are "sliding toward extinction," some of them at alarming rates, a new study warns.. Researchers found 48% of the species in ...