A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells ...

The pattern of geological boundaries may not be as unstable as people have thought, as these boundaries exist between geological wedges of time, like eons, periods, and epochs. Each of these wedges is ...

Around 540 million years ago, Earth's biosphere underwent a pivotal transformation, shifting from a microbe-dominated world ...

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!

A new analysis of rocks thought to be at least 2.5 billion years old helps clarify the chemical history of Earth's mantle -- the geologic layer beneath the planet's crust. The findings hone scientists ...

Introduction. The study of the earth / J.F. White -- The law of uniformity and geologic time. James Hutton / Karl von Zittel -- The uniformity of nature / Charles Coulston Gillispie -- Measuring ...

An artist's conception of the Earth as it may have appeared 466 million years ago An artist's conception of the Earth as it may have appeared 466 million years agoOliver Hull/Monash University Editor ...

Climate, tectonics and time combine to create powerful forces that craft the face of our planet. Add the gradual sculpting of the Earth’s surface by rivers and what to us seems solid as rock is ...

This illustrated geologic timescale of Earth focuses on the landscapes, flora and fauna of the West, drilling into the region’s deep history.

From ecosystem change and soil quality to hydrology and natural hazards, Earth studies have never been so important. But in a crowded field of concerns, how can researchers prioritise the most ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...