Taxonomy term

august 2017

Down to Earth With: Cave microbiologist Hazel Barton

In the early 1990s, when Hazel Barton was pursuing her doctorate in medical microbiology at the University of Colorado Health Sciences Center in Denver, she enjoyed exploring caves as a hobby. She never imagined that she would one day incorporate caving into her career.

04 Aug 2017

Red Planet Roundup: August 2017

With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, new findings are announced often. Here are a few of the latest updates.

03 Aug 2017

Stock traders' algorithm finds slow earthquakes

Traders in financial markets use a variety of computer algorithms to help them decide when to buy or sell different stocks. Geologists have now adapted one of these algorithms to improve detection of subtle slow-slip events along faults, paving the way for a better understanding of regional seismic hazards.

02 Aug 2017

Where on Earth? - August 2017

Where on Earth was this picture taken? Use these clues to guess and submit your answer via mail, email or Web by the last day of the month (August 31, 2017).

01 Aug 2017

Titan's oddly oriented dunes may be electrostatically sculpted

Saturn’s largest moon, Titan, which has a dense, nitrogen-rich atmosphere with evidence of large amounts of frozen water at the surface, is a world apart from Earth’s moon. Among other strange phenomena, Titan has vast fields of frozen hydrocarbon particles that form 100-meter-tall dunes whose crests point east, opposite the prevailing west-blowing winds predicted by atmospheric models of Titan. In a new study in Nature Geoscience, researchers have found that these mysterious dunes may be sculpted in part by electrostatic charging of the frozen hydrocarbon grains.

01 Aug 2017

Evidence of devastating drought found beneath the Dead Sea

The Dead Sea, a landlocked lake bordered by Israel, Jordan and Palestine, is nearly 10 times saltier than the ocean. And it’s getting saltier. Since the beginning of the 20th century, the water level has dropped by nearly 30 meters, largely because of diversions of the Jordan River, the lake’s primary tributary and the arid region’s main source of fresh water.

31 Jul 2017

Eavesdropping on Old Faithful

The Old Faithful geyser in Yellowstone National Park has erupted predictably within a 10-minute window every hour for more than 150 years, but the inner workings that power its regular 30-meter-high eruptive plumes are largely still a mystery. Recent monitoring of the gusher is revealing new secrets about its plumbing system, which may help the National Park Service plan for future infrastructure expansions around the popular attraction.

28 Jul 2017

Geomedia: Books: Earth faces challenges, but are they tipping points?

The 2016 book, “Tipping Point for Planet Earth,” by paleoecologists Anthony D. Barnosky and Elizabeth A. Hadly, is a serious book on a serious topic, and a well-written, one-stop resource for anyone who wants to understand a host of looming problems. The book focuses on the alarming number of worrisome planetary trends now underway, mainly as a result of the convergence of population growth and human-induced global warming. Chapters cover people (population growth), “stuff” (increased purchases of material goods), storms, hunger, thirst (failing water supplies, clean or not), toxins, disease and war. These trends have merited serious attention from environmental scientists and deserve the same from politicians. Whether they are tipping points, however, is a point of contention.

27 Jul 2017

Nineteenth-century cows muddied Southern California continental shelf

When offshore ecosystems deteriorate, scientists often look at changing ocean conditions, urban runoff or fishing as potential explanations. Cows usually don’t come to mind. But new research investigating the seafloor off the coast of Los Angeles suggests that 19th-century cattle, despite their terrestrial lifestyle, left a lasting impact on the underwater habitat there.

26 Jul 2017

Delusions of grandeur in building a low-carbon future

Traditional macroeconomic models provide an unstable foundation for decision-making when planning for a low-carbon future. To maximize our ability to achieve our future energy, climate and economic goals, economic modeling concepts must be improved.
25 Jul 2017