The rapid decline of the Hopewell culture about 1,500 years ago might be explained by falling debris from a near-Earth comet that created a devastating explosion over North America, laying waste to forests and Native American ...
Archaeology
Feb 1, 2022
0
165
The calendar said December but the warm moist air screamed of springtime. Add an eastbound storm front guided by a La Nina weather pattern into that mismatch and it spawned tornadoes that killed dozens over five U.S. states.
Environment
Dec 12, 2021
0
100
On Earth, river erosion is usually a slow-going process. But on Mars, massive floods from overflowing crater lakes had an outsized role in shaping the Martian surface, carving deep chasms and moving vast amounts of sediment, ...
Planetary Sciences
Sep 29, 2021
3
276
Juvenile salmon migrating to the sea in the Sacramento River face a gauntlet of hazards in an environment drastically modified by humans, especially with respect to historical patterns of stream flow. Many studies have shown ...
Plants & Animals
May 20, 2021
0
6
Water and air are highly mutable resources that exist in a myriad of physical states and dimensions, and due to their affectivity, these entities participate in a multitude of interactions capable of sustaining life, transforming ...
Environment
Dec 2, 2020
0
40
A new study from The University of Texas at Austin is helping scientists piece together the ancient climate of Mars by revealing how much rainfall and snowmelt filled its lake beds and river valleys 3.5 billion to 4 billion ...
Space Exploration
Aug 20, 2020
5
355
Volcano-like features seen in polar regions of Saturn's moon Titan by NASA's Cassini spacecraft could be evidence of explosive eruptions that may continue today, according to a new paper by Planetary Science Institute Senior ...
Astronomy
Jun 16, 2020
0
195
A team of Leeds mathematicians and French civil engineers has developed a new way of visualizing and analyzing complex flood-protection schemes.
Earth Sciences
Apr 1, 2020
0
72
In step with President Donald Trump's push for more energy development in California's deserts, the U.S. Bureau of Land Management announced Thursday it wants to transform 22,000 acres of public land in the southern Owens ...
Environment
Jan 23, 2020
1
10
Mars may seem to be an alien world, but many of its features look eerily familiar—such as this ancient, dried-up river system that stretches out for nearly 700 kilometres across the surface, making it one of the longest ...
Space Exploration
Oct 10, 2019
2
48
