Australia's Indigenous populations have played an important role in modifying the continent's landscape over millennia, particularly by using fire to create open spaces for daily activities. This continued until they left ...
Earthquakes often occur along plate boundaries, when sudden movements of the "stuck" plates release elastic strain energy, sending out seismic waves that result in the ground shaking familiar to many worldwide. More rarely, ...
Earth has experienced significant changes in its climate over the past ~2.6 million years (the Quaternary) with a series of glacial and interglacial cycles that have transformed our landscapes. This involves erosive action ...
Deep in the heart of the Yucatan Peninsula, an ancient mangrove ecosystem flourishes more than 200 kilometers (124 miles) from the nearest ocean. This is unusual because mangroves—salt-tolerant trees, shrubs, and palms—are ...
Earth Sciences
Oct 4, 2021
0
1843
Nearly one quarter of the land in the Northern Hemisphere, amounting to some 9 million square miles, is layered with permafrost—soil, sediment, and rocks that are frozen solid for years at a time. Vast stretches of permafrost ...
Earth Sciences
Apr 28, 2021
35
1509
Visualize the following: The Earth's climate swings between cold glacial and warm interglacial periods; the last glacial interval was about 20,000 years ago; sea level was about 126 meters (413 feet) below modern sea level ...
Earth Sciences
Sep 10, 2018
1
130
Scientists were surprised at how fast bacteria developed resistance to the miracle antibiotic drugs when they were developed less than a century ago. Now scientists at McMaster University have found that resistance has been ...
Cell & Microbiology
Aug 31, 2011
1
0
A team of ecologists, biologists, geographers, geologists and Earth scientists from across Europe, working with a colleague from the U.K. and another from Canada, has found evidence suggesting that Europe was not covered ...
A research team, composed of climatologists and an astronomer, have used an improved computer model to reproduce the cycle of ice ages (glacial periods) 1.6 to 1.2 million years ago. The results show that the glacial cycle ...
Earth Sciences
May 15, 2023
0
15
Until recently, the southern part of South America was believed to be the main source of the dust that lands in Antarctica. Fine particles, or aerosols, are often carried long distances by atmospheric circulation. This dust ...
Earth Sciences
Jan 20, 2023
0
32
