Earth’s path around the Sun is not a fixed racetrack but a slowly shifting orbit, and those subtle changes have a long history of reshaping the planet’s climate. As astronomers refine how these ...

The Earth’s climate is a dynamic entity, continuously evolving over billions of years with alternating periods of extreme heat and cold. Recent scientific studies indicate that the Earth is subtly ...

A cave in Brazil warns that current global warming is progressing twice as fast as it did at the end of the Ice Age.

Some periods in Earth's history are so different from our own that they may as well belong to another planet. Many people are ...

Our species likes it cold. Homo sapiens evolved in — and still inhabits — one of Earth’s rare and fragile ice ages, periods distinguished not by an abundance of saber-toothed cats and woolly mammoths ...

New reconstructions of 540 million years of climate history show the planet tumbling between icehouse and hothouse states, revealing how rare and vulnerable our temperate moment is. Some 4 billion ...

Ice, ice ages, and our planet's climate history -- Fire, water, and God -- Glaciers and fossil fish -- The evidence -- Searching for the cause of ice ages -- Defrosting earth -- The ice age cycles -- ...

Mars is half the size of Earth, with one-tenth of our planet’s mass, and at the nearest point in its orbit is over 33 million miles away. Yet new research highlights the extraordinary influence the ...

You can learn all about how the Ice Age impacted Utah at an exhibit at the Natural History Museum of Utah, for a limited time. "Mysteries of the Ice Ages" explores 18,000 years of Earth's dramatic Ice ...