July 18, 2017
Delusions of grandeur in building a low-carbon future
Since April 22, 2016, leaders of 195 nations have signed the Paris climate accord, which starts the process of voluntarily committing to …
The EARTH archive
Geology
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1236 articles · Page 19 of 52
July 17, 2017
Bottom dropping out of coral reefs
Coral reefs provide habitat for 25 percent of all marine life, support fishing and tourism economies, and protect shorelines from surging waves …
July 14, 2017
In a position to lead: How military technology and innovation can ease the world's water challenges
The U.S. military is spread across more than 500 installations worldwide, from small Forward Operating Bases (FOBs) in Afghanistan and Iraq that …
June 22, 2017
Getting there and getting around Grand Junction, Colorado
Grand Junction is a 4.5-hour drive from major airports in both Denver and Salt Lake City. The smaller but more convenient Grand Junction Regional …
June 22, 2017
Travels in Geology: A tale of two rivers: Grand Junction, Colorado
Named for its location at the confluence of two major rivers, Grand Junction, western Colorado’s largest community, is a laid-back city of …
June 22, 2017
Geologic Column: Volcanoes: Awesome and dangerous
Volcanoes never cease to fill me with awe. Volcanism has been a part of Earth’s history since the planet formed about 4.6 billion years ago, and …
June 20, 2017
Down to Earth With: Paleoclimatologist Gifford H. Miller
“Hope for the unexpected.” This motto has pulled paleoclimatologist Gifford H. Miller to remote corners of the world to conduct fieldwork for …
June 19, 2017
Geomedia: Mixed media: Geo-art collaboration shifts perspectives on earth materials
“Arts and Sciences.” The phrase is familiar to students and faculty on most campuses, often serving as the moniker of colleges or other …
June 19, 2017
Ice (Re)Cap: July 2017
From Antarctica to the Arctic; from polar caps, permafrost and glaciers to ocean-rafted sea ice; and from burly bears to cold-loving microbes, …
June 19, 2017
New global volcanic emissions map debuts
Volcanoes may not always be erupting ash or lava, but that doesn’t mean they’re not venting other materials. Many, in fact, continuously spew …
June 19, 2017
Magnetic method dates glacial floods in Iceland
In Iceland, volcanoes buried under glaciers occasionally melt huge quantities of ice, setting off massive glacial floods called jökulhlaups. …
June 19, 2017
Evolution of eyes, not limbs, led fish onto land
In the Middle Devonian, roughly 385 million years ago, the first vertebrates began making their way out of water. For these pioneering fish, the …
June 19, 2017
New cloud types recognized
Familiar clouds like cumulonimbus, cirrocumulus and nimbostratus have some new company. The World Meteorological Organization (WMO) has published …
June 16, 2017
Northeast and Midwest U.S. projected to warm faster than national average
The U.S. Northeast and Midwest will warm quickly in the coming decades compared to national and global averages, reaching established temperature …
June 16, 2017
Platinum may point to impact theory for Younger Dryas
Some large meteorite strikes leave obvious craters on Earth’s surface, while others that hit water or ice or explode in the air may only leave …
June 16, 2017
Comment: A moving target: What you need to know about drone regulations
In 2015, about 700,000 drones were sold in the U.S. In 2016, the number exceeded 2.5 million. And the Federal Aviation Administration (FAA) has …
June 15, 2017
The only Earth: Exploring the link between plate tectonics and life on the blue planet
Earth is the only planet known to have active plate tectonics, and also the only place that hosts life. Could that be a coincidence? It’s …
June 15, 2017
Whirling "gravel devils" show wind can carry more than just sand
Sand grains, by definition, are between 0.06 and 2 millimeters in diameter, and they are often thought of by scientists as the largest sediments …
June 1, 2017
Burying the sky: Turning carbon dioxide into rock
Blocky, moss-covered basalt covers the ground surrounding Iceland’s Hellisheidi Geothermal Power Plant. As acidic rainwater percolates through …
May 22, 2017
"The Himalaya Connection": Telling a story of geoscientific exploration on film
It was 3 a.m. on our first night in the field. In our dome tent, I was startled awake by a distant rumbling sound, accompanied by a growing …
May 22, 2017
Getting there and getting around Kalahari
“There are three gateway cities to the Kalahari, all of which are at least a day’s drive from the Okavango Delta. Although it’s the farthest …
May 19, 2017
Travels in Geology: Tracking African animals and deranged drainages across the Kalahari
After landing in Windhoek, Namibia, on the western edge of the Kalahari Desert, our family embarked on an African adventure with two exhilarating …
May 19, 2017
Benchmarks: June 1977: First Excavations at Nebraska's Ashfall Fossil Beds
In the spring of 1971, paleontologist Mike Voorhies was mapping rock exposures on a farm in northeastern Nebraska when he wandered into a small …
May 19, 2017
Down to Earth With: Biogeochemist Stephen MacAvoy
When Stephen MacAvoy was growing up in the suburbs of Connecticut, most of the animals he encountered were pets: dogs, cats or the occasional …