Explore 25 Major Events in Earth's 4.5 Billion Year History. Discover pivotal moments from its formation to the rise of life.

From butterflies to blue whales, corals and worms, Earth is home to an incredible diversity of animals. How all of these ...

Researchers have uncovered a remarkable fossil site in a remote part of Canada's Northwest Territories, offering ...

Add Yahoo as a preferred source to see more of our stories on Google. Like many of us, Earth bears old pockmarks. Our planet’s crust has a band of ancient craters that formed around 465 million years ...

Bacteria are the most diverse organisms on Earth, with a number of species that’s difficult to quantify. They’re also incredibly old. Bacteria consist of a single cell. They do not have bones and are ...

Long before forests covered Earth or animals swam through the oceans, tiny organisms were already building complex chemical ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Kangaroos thrive on tough grass using thick enamel instead of complex teeth, revealing an unexpected path in evolution.