Related topics: tectonic plates · earth · mars · earthquake · fossil

Video: How do we know the age of the Earth?

The Earth is 4.565 billion years old, give or take a few million years. How do scientists know that? Since there's no "established in" plaque stuck in a cliff somewhere, geologists deduced the age of the Earth thanks to a ...

US geologists link small quakes to fracking

Geologists in Ohio have for the first time linked earthquakes to the intensely scrutinized drilling method called hydraulic fracturing, or fracking, leading the state to issue new permit conditions Friday in certain areas ...

Shale could be long-term home for problematic nuclear waste

Shale, the source of the United States' current natural gas boom, could help solve another energy problem: what to do with radioactive waste from nuclear power plants. The unique properties of the sedimentary rock and related ...

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Geologist

For other uses, see Geologist (disambiguation).

A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth and terrestrial planets. Geologists usually engage studying geology, and approach this using physics, chemistry and biology as well as other sciences.

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