Depending on your definition, the Earth features many "biggest" living things. Today we're looking at where they stack up ...

The largest living thing on the planet is not a whale or any other animal you might expect. It is a giant fungus that kills anything in its path, currently taking up more than three square miles ...

An curved arrow pointing right. The largest living thing on the planet is not a whale or any other animal you might expect. It is a giant fungus that kills anything in its path, currently taking ...

A single organism. The mass of all the genetically identical trees weighs around 6,000 tons, which makes it, in terms of mass, the largest living thing on Earth. The Pando is protected by the US ...

Its name means "I spread" in Latin, and for good reason. Pando is among the largest and oldest organisms on Earth. Its 47,000 stems cover more than 100 acres. Scientists have sequenced the genome ...

Stretching over 1,200 miles, Australia's Great Barrier Reef is the largest structure on Earth built by living organisms. Even for its size, it houses an incredible biodiversity -- literally ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. If you go back far enough in the fossil record — past the cavemen, dinosaurs, and ...

The world's largest living organism is slowing being eaten alive after living on Earth for thousands of years. The Pando is a colony of cloned aspen trees that sprawls across 106 acres between ...