In the karstic caves of Puerto Rico, cave art paints the rock walls. Previous research has assigned ages to this art based on the ages of nearby archaeological artifacts within the caves, but these ages are relative and may ...
Archaeology
Oct 17, 2023
0
347
Earthworms, the hardworking invertebrates that grace the upper layers of soil, have long been considered helpful in our home gardens. Earthworms are prolific munchers, grinding up organic material and sediment grains that ...
Earth Sciences
Oct 17, 2023
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1
Scientists from the U.S. Geological Survey (USGS) have been monitoring groundwater quality in wells across the country for more than three decades, looking for harmful chemicals or residual substances that may cause harm ...
Earth Sciences
Oct 17, 2023
0
407
You've heard of the salmon run: upon reaching sexual maturity, wild Atlantic salmon, which are born in freshwater rivers but spend most of their adult life in the ocean, swim upstream all the way back to their birthplace ...
Plants & Animals
Oct 16, 2023
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1
One of the most exciting findings from NASA's Dawn mission is that Ceres, the largest object in the asteroid belt that lies between Mars and Jupiter, hosts complex organics. The discovery of aliphatic molecules, which consist ...
Astrobiology
Oct 16, 2023
0
271
The discovery of a spectacular fossil site in Argentina is helping shed new light on life at the end of the Cretaceous, the time period just before the non-avian dinosaurs went extinct.
Paleontology & Fossils
Oct 13, 2023
0
260
On 8 June 2020, the Mangum Fire ignited 16 miles north of the North Rim of Grand Canyon National Park. By the time it was mostly contained, about a month later, the fire had burned over 70,000 acres of land.
Earth Sciences
Oct 12, 2023
0
5
An eruption of Old Faithful Geyser in Yellowstone National Park is a sight to behold. Indeed, millions of tourists flock to the park each year to see it. Hot water and steam are ejected in the air to a height of 100–180 ...
Ecology
Oct 12, 2023
0
18
Sea-level rise and big storms are hammering coastal communities, causing increased flooding and land loss, saltwater intrusion, wetland loss/change, and impacts to local infrastructure.
Earth Sciences
Oct 11, 2022
1
67
Today, increasing levels of carbon dioxide in the atmosphere are warming up the planet. Climate change can disrupt the balance of ecosystems and contribute to endangerment and extinction of some species. New research suggests ...
Earth Sciences
Oct 11, 2022
0
6
