Taxonomy term

geology

Slumgullion: Colorado's natural 'lab' offers insights into landslides worldwide

In southwestern Colorado, a centuries-old landslide (first identified as such in 1883 by an infamous prospector and purported cannibal) is offering geologists an ideal laboratory to study slow-moving slides.

27 Apr 2018

Radium levels suggest Arctic Ocean chemistry is changing

Rising temperatures have already caused changes in the Arctic environment, like diminishing sea ice and thawing permafrost. Now, it appears that sea-ice loss could be throwing Arctic Ocean chemistry out of whack.

24 Apr 2018

From farm to filter: Restored wetlands remediate nitrogen pollution

The early 20th-century invention of a nitrogen-fixation process revolutionized agriculture and made it possible to feed the planet’s growing population. But nitrogen runoff is polluting our waterways and suffocating aquatic life. Now, researchers looking for ways to reverse that trend are turning farmland into wetlands to filter nitrogen from streams and rivers.
20 Apr 2018

Battery recycling underlies elevated lead in African soils

Of all the recycling industries in the world, lead-acid battery recycling is one of the most profitable — and one of the most toxic. In the U.S., regulations on the industry have dramatically reduced lead exposure and pollution at battery recycling plants. But in Africa, where the industry is growing and largely unregulated, lead levels are skyrocketing. A new study in Environmental Research looking at environmental lead levels in seven African countries is shining a spotlight on the ongoing public health crisis.

19 Apr 2018

Geoscience on Film: Roadcuts and rockfalls in mountainous Mizoram

Doug Prose has co-produced documentaries showcasing Earth and the geosciences with his partner and wife, Diane LaMacchia, through their nonprofit Earth Images Foundation since 1992. Their latest documentary, “The Himalaya Connection,” began airing on PBS stations in April. Prose has previously written and blogged for EARTH about the pair’s experience shooting and preparing “Connection,” which involved six separate trips to Bangladesh, Bhutan, India, Mongolia and Nepal from 2011 to 2016. They recently traveled back to the region for their next project.

18 Apr 2018

Unprecedented exploration of undersea volcano yields surprising results

Underwater volcanic eruptions happen every day, but because of the vastness of the ocean and the great depth of water blocking the view, catching an active eruption is a game of chance. In fact, the largest-known underwater eruption of the past century was something of a fluke discovery. In July 2012, an airline passenger spotted a huge pumice raft floating in the South Pacific during a flight to Auckland, New Zealand. Upon landing, she alerted researchers, and scientists confirmed the 400-square-kilometer pumice raft near the Havre Seamount using NASA satellite imagery.

18 Apr 2018

World's longest underwater cave found in Mexico

In January, scientists and underwater explorers working with the Great Maya Aquifer (Gran Acuífero Maya, or GAM) project discovered the world’s longest flooded cave system, which stretches 347 kilometers in Quintana Roo on Mexico’s Yucatán Peninsula.

17 Apr 2018

Geomedia: Books: Solar eclipses past, present and future

The two books reviewed here — “Totality” and “American Eclipse: A Nation’s Epic Race to Catch the Shadow of the Moon and Win the Glory of the World” by Colorado science writer David Baron — both capture the historical scientific significance and the excitement that still exists today in viewing solar eclipses, particularly those that pass over our own piece of the planet.

16 Apr 2018

Geomedia: Television: "One Strange Rock" is Superlative

National Geographic's new 10-part documentary series, "One Strange Rock," is, in a word, superlative, according to our reviewer. Featuring gorgeous footage and state-of-the-art, digitally generated animations, and perhaps covering a wider range of earth science topics than other documentaries in the genre, it’s worthy of the adjective.

11 Apr 2018

Geologic Column: Over the hills and far away

English author G.K. Chesterton thought that “over the hills and far away” was the most poetic line in all of literature. The tune “Over the Hills and Far Away” mentioned in the nursery rhyme is a traditional British song from the late 17th or early 18th century. It was a siren’s song that promised wonder and adventure beyond the blue horizon. Gwyn Thomas, a fine though neglected Welsh writer, heard the song during his early-20th-century childhood in the Rhondda Valley, the heart of the south Wales coal region. Honeycombed by mines, the Rhondda’s spirit lay at the core of Thomas’ heart and imagination, and he distilled a mordant humor from the dark vibes of the life that he knew there.

10 Apr 2018

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