All species on Earth, both living and extinct, are related. We know this because of a biological tool called the tree of life. This "tree" takes the form of a diagram that maps the relationships ...

This “supergroup” contains an incredibly diverse range of predatory microbes that are extremely different genetically from any other form of life on Earth. The tree of life is a useful diagram ...

Here’s how it works. By studying the genetic tree of life, scientists have determined that the first life on Earth may have lived underwater, where it would be shielded from harmful ultraviolet ...

T he origins of life on Earth have long fascinated scientists, particularly the nature of the last universal common ancestor ...

the trembling giant takes the prize as the largest tree by weight, species, and land mass. And with at least 9,000 years under its belt, it is one of the Earth's oldest living organisms.