June 19, 2018
Energy Notes: January 2011-2012
U.S. Oil & Petroleum Imports (millions of barrels per day) Oil and petroleum imports data are preliminary numbers taken from the American …
The EARTH archive
May 2012
Explore the archive by subject.
20 articles · Page 1 of 1
June 13, 2018
Mineral Resource of the Month: Manganese
Lisa A. Corathers, a mineral commodity specialist for the U.S. Geological Survey, compiled the following information about manganese, a …
June 5, 2018
Travels in Geology: Santorini: Dangerous volcano, postcard-perfect jewel of the Aegean
Santorini is an idyllic Greek isle renowned for its sensational sunsets, colorful beaches, and blue-domed, whitewashed buildings clinging to …
June 5, 2018
Getting There and Getting Around Greece
Reaching Santorini by one of the regular domestic or chartered international flights is convenient, but to appreciate fully the dramatic caldera, …
August 1, 2016
Benchmarks: May 15, 1909: The Northern Great Plains earthquake
In Culbertson, Mont., at a quarter past nine on a Saturday evening, Ralph Bush and H.G. Walsh were resting in the third-floor apartment of the …
January 13, 2015
Down to Earth With: The Geographers of the Solar System
Certain government officials have super cool titles: for example, Planetary Protection Officer (NASA’s Catharine Conley) and Oceanographer of the …
May 25, 2012
Better warnings for the consequences of earthquakes: Bringing seismic hazard and risk assessments to policy
During the last decade, earthquakes have taken a heavy toll on lives, shocking the world. Two exceptionally large earthquakes off the coasts of …
May 21, 2012
Carbon and the city: Tracking emissions from megacities
Sometime in the first century A.D., Rome’s population passed 1 million. It took more than 18 centuries for a city to surpass the 10 million mark, …
May 16, 2012
Kilauea's Explosive Past - and Future
“Namakeha and some other chiefs in the train of Kamehameha, went with soldiers to Ka’u [on the southern coast of the Big Island of Hawaii], to …
May 16, 2012
Policy in the field: What's next for tax policies and the American clean energy economy?
It takes green to be green. Renewable energy technology requires dedicated investments, whether public or private, to succeed. The costs are …
May 9, 2012
Sumatran strike-slip earthquakes challenge seismologists
Events may shed light on regional tectonics, alter stress on nearby megathrust Following the magnitude-8.6 earthquake that struck off the coast …
May 8, 2012
Volcanoes sparked - and prolonged - the Little Ice Age
In the winter of 1780, New York Harbor froze, allowing people to walk from Manhattan to Staten Island for the first time in recorded history. The …
May 3, 2012
Voices: Making tough decisions in a changing climate
World leaders are beginning to realize that planning for and adapting to our changing climate must become a priority of national governments. But …
April 26, 2012
IceGoat: The next generation
One source of young talent to carry the military’s proposals and technologies into the future will come from the U.S. Naval Academy in Annapolis, …
April 25, 2012
Voices: Defending science: The link between creationism and climate change
What do creationists and climate change deniers have in common? Over the past few years, this riddle has been on our minds a lot at the National …
April 25, 2012
Earliest instrumental temperature record recovered in Italy
The Medici Network measured temperatures during the Little Ice Age A few hours before dawn on the morning of Nov. 4, 1966, engineers at the …
April 25, 2012
North star loses mass but still shines bright
The North Star, the Pole Star, the Guiding Star, Polaris: Its many names reflect the many centuries humans have gazed northward to it for …
April 25, 2012
Mobile mapping with lidar hits the road
About a decade ago, Light Detection and Ranging technology, also known as lidar, burst onto the geoscience scene. The tool was quickly adopted by …
April 16, 2012
U.S. Navy navigates a sea change in the Arctic
Last September, at the international Arctic Forum in the Russian city of Arkhangelsk, Prime Minister Vladimir Putin compared new Arctic shipping …
March 8, 2012
Quoth the feathered, iridescent Microraptor, Nevermore
Our knowledge of the evolution of feathers in dinosaurs is sketchy, at best, but new research on fossilized feathers is painting a remarkably …