After years of debate, the International Chronostratigraphic Chart has officially been revised. What does that mean, exactly? Our current point in Earth's geological timeline has been updated so that ...

Continental clues: Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories about plate tectonics. Researchers have made a new ...

A panel of experts voted down a proposal to officially declare the start of a new interval of geologic time, one defined by humanity’s changes to the planet. By Raymond Zhong The Triassic was the dawn ...

Earth’s geological timeline goes back 540 million years and gives us a picture, so to speak, of the history of our planet that we can read in the sediments found in rock layers, or strata. The ...

Millions of people around the world know of the Grand Canyon and many Arizonans have visited it — but few comprehend the incredible complexity and age of the rocks that form this vast gash in the ...

What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!