Where do the world's biggest diamonds come from? Geology now has answers

Some of the most extraordinary gems ever found belong to a rare class of diamonds known as CLIPPIRs (Cullinan-like, Large, ...
Great Big Story on MSN

The Aldabra tortoise, a giant of longevity and resilience

Discover the Aldabra tortoise, a giant species with remarkable longevity, unique traits, and conservation challenges.
Discover Wildlife

These giants are thriving on a remote island in the Indian Ocean. But there's a problem – their eggs aren't hatching

Adult populations of Aldabra giant tortoises may appear stable, but the number of young tortoises surviving to replace them ...