Asteroid impact earth

Dinosaurs were thriving before asteroid strike that wiped them out

a fossilized dinosaur footprints

Dinosaur tracks make fresh impression at Valley Forge park

This is a tidal marsh in Maryland, on a tributary of Chesapeake Bay.

As sea level rises, wetlands crank up their carbon storage

A 2015 wildfire burns in the boreal forest of central Alaska. A recent study by Tyler Hoecker and Philip Higuera reconstructs fire history in a nearby boreal forest landscape and suggests that fire activity over the past several decades has been higher than at any time over the past 450 years.

Alaska forest fires over past 450 years

Scientists used the model to calculate seismic risk in the L.A. Basin

Fast, simple new assessment of earthquake hazard

Roman monuments, including the Colosseum

Seemingly dormant geologic fault damaged famous Roman buildings 1,500 years ago

Rare Earth Elements

Potential new source of rare earth elements

An example of sector zoning

‘Amazing snapshots’ plumb volcanic depths

megalodon's teeth

How megalodon’s teeth evolved into the ‘ultimate cutting tools’

Tibetan Plateau

Tibetan plateau rose later than we thought

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