East Africa is much drier than other tropical land regions, including the Amazon and Congo rainforests. The geography of East Africa was always thought to make the region dry and susceptible to drought, but the precise mechanism ...
Earth Sciences
Mar 2, 2023
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105
For spending their 160 million years of existence mostly hiding in rivers and streams under rocks, Eastern and Ozark hellbenders had done pretty well for themselves.
Plants & Animals
Nov 21, 2022
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38
Thousands of years ago during the last Ice Age, rivers flowed from giant glaciers in the Sierra Nevada down to the Central Valley, carving into rock and gouging channels at a time when the sea level was about 400 feet lower. ...
Earth Sciences
Nov 18, 2022
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338
Beneath the surface of rivers lurks a hazard that isn't well understood—but could wreak havoc on people and communities near the water.
Environment
Aug 4, 2022
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11
The latest image release from ESA's Mars Express takes us over two ruptures in the Martian crust that form part of the mighty Valles Marineris canyon system.
Space Exploration
Jul 20, 2022
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62
How do coastal channels form and what are their stable configurations? These are the questions a team of researchers, including a University of Arkansas assistant professor of geosciences, John Shaw, set out to answer in ...
Earth Sciences
Jun 8, 2022
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103
This network of long grooves and scratches forms part of a giant fault system on Mars known as Tantalus Fossae, and is shown here as seen by ESA's Mars Express. At first glance, these features look as if someone has raked ...
Space Exploration
May 3, 2022
0
31
Giant crocodiles once roamed northeastern British Columbia. A recently published article in Historical Biology features the first detailed trace fossil evidence ever reported of giant crocodilians. The sites are from the ...
Paleontology & Fossils
Apr 1, 2022
0
181
The entrance road to Henry Cowell Redwoods State Park crosses the San Lorenzo River and winds through a broad flat meadow. To Noah Finnegan, a geomorphologist who studies rivers, something about this landscape doesn't look ...
Earth Sciences
Feb 14, 2022
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80
Rivers need water—a fact that may seem ridiculously obvious, but in times of increasing water development, drought, and climate change, the quantity of natural streamflow that remains in river channels is coming into question, ...
Plants & Animals
Jan 13, 2022
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