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Earth science

A copper mine delves deep into the orange rock of an Arizona desert. More than a dozen even steps have been excavated leading down to a roughly circular depression in the ground. Some of the steps have patches of oxidized copper, a blue-green color. A smooth path large enough for heavy machinery spirals down into the bottom of the mine.
Posted inResearch Spotlights

Machine Learning Could Revolutionize Mineral Exploration

Aaron Sidder, freelance science writer by Aaron Sidder 26 August 202223 September 2022

Using a global data set of zircon trace elements, new research demonstrates the power of machine learning algorithms to accurately identify and locate porphyry copper deposits.

Deb Haaland, wearing a gray suit with a red and black blouse, reads from a black book as she swears in the new USGS director. David Applegate, wearing a gray suit, white shirt, and red bow tie, stands opposite her with his right hand raised as he is sworn in. The pair stand in front of a large white marble fireplace set in a wood-paneled wall. The wall is decorated with Native American artwork, and the fireplace is framed by an American flag and a light blue flag for the U.S. Department of the Interior.
Posted inNews

New USGS Director: Partnerships Are Our Superpower

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 26 August 202226 August 2022

The new director hopes to strengthen existing partnerships, build and retain a more diverse and inclusive workforce, and deliver the agency’s science to those who need it most.

We are in the middle of solar cycle 25, which means that the Sun has been slowly ramping up its sunspot and flare activity for the past few years.
Posted inFeatures

11 Discoveries Awaiting Us at Solar Max

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 25 August 202230 September 2022

Each solar cycle might seem like the same old story, but one thing has changed significantly since the previous solar maximum–our technology.

Snow-covered peaks line the southern edge of the Tibetan plateau.
Posted inResearch Spotlights

Uncovering the Formation of the Western Nepal Embayment

Sarah Derouin, Science Writer by Sarah Derouin 24 August 202219 October 2022

Using thermokinematics, researchers have found that crustal accretion along the megathrust at mid-lower crustal depths shapes plateau growth and regional drainage development.

Yosemite National Park ecosystem featuring a stream, trees, and snow-covered hillslope.
Posted inResearch Spotlights

What Drives Hillslope Connectivity?

Aaron Sidder, freelance science writer by Aaron Sidder 23 August 202223 August 2022

Hillslopes play a critical role in linking ecosystems. Understanding the forces that drive their connections can help us to better understand adaptation in the face of climate change.

Photograph of an outcrop of the North American Midcontinent Rift showing dark gray rocks enclosing a light-colored rock—the target sample in this study. In the foreground stands coauthor Nick Swanson-Hysell, amid green grasses along the base of the cliff.
Posted inNews

Swinging Strength of Earth’s Magnetic Field Could Signal Inner Core Formation

by Alka Tripathy-Lang 22 August 202230 September 2022

The magnetic record stored in rocks documents the liquid core’s behavior and possibly when the inner core formed. Whether it formed half a billion or more than a billion years ago, however, is up for debate.

Three scientists discuss around a map on a table.
Posted inFeatures

How an Unlikely Friendship Upended Permafrost Myths

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 19 August 202220 September 2023

“Beautifully long arguments” between an American scientist and a Russian researcher helped clarify several fundamental assumptions about permafrost thaw.

Deepwater Horizon oil spill in the Gulf of Mexico, 2010
Posted inNews

Ninety Percent of the World’s Oil Slicks Are Caused by Humans, Not Nature

by Katharine Gammon 19 August 202224 March 2023

Researchers were surprised to find exactly how many oil slicks were due to human activity, highlighting the need for people to pay attention to runoff and leaks.

Viburnum leaf beetle on a chewed leaf
Posted inResearch Spotlights

Plant-Nibbling Insects May Make It Cloudier and Cooler

by Rebecca Dzombak 17 August 202217 August 2022

Insects that eat plant leaves could change the local atmosphere, but current climate models do not account for this impact.

An image of fish and bubbles in the ocean
Posted inResearch Spotlights

Short-Term Events Can Shrink the Habitable Zone in Oceans

Sarah Derouin, Science Writer by Sarah Derouin 12 August 202212 August 2022

A new study looks at habitat reduction during low-oxygen events, spurring the question, Could short-term events provide a window into the long-term health of oceans?

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