Isn't it wonderful to imagine that Earth was utterly different 400 million years ago! Before the time, when trees, oaks, and ...

which is a true spider that dates back to 310 to 315 million years ago. Modern spiders live on every continent on Earth and ...

Near-Earth asteroid Bennu has a slim chance of colliding with Earth in 2182. If it does, the impact could trigger a global ...

For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide—were ...

The Pliocene epoch, which lasted from 5.3 million to 2.6 million years ago, was a consequential time in Earth's history. The ...

Zircon crystals found in the Grand Canyon act as “natural time capsules,” preserving details of Earth’s ancient ... Colorado River five to six million years ago, new evidence suggests ...

Earth 400+ million years ago. We often look at sharks with fear, but it’s equally important to recognize their evolutionary longevity—something that can be seen in their statuesque faces ...