A Few Facts: Volcanic Explosions

Volcano-watchers have had lots of excitement lately with the ongoing eruptions on the Reykjavik Peninsula in Iceland and Soufriere, on the West Indies island of Saint Vincent. So far both eruptions are fairly small. Colorful graphic representations of the relative sizes of volcanic eruptions are intriguing, although variability in natural events confounds human attempts to assign neat boxes or bubbles to these phenomena.

By |2021-04-22T06:30:04-07:00April 22nd, 2021|Our Amazing Earth|4 Comments

Viewing Volcanic Eruptions

Watching a volcano erupt is exciting–and people all around the world now have opportunities to see these dramatic performances! The new volcano on the Reykjavik Peninsula in Iceland is getting lots of attention, as is Mount Etna in Sicily. Also, the eruption that began at Kilauea on December 20, 2020 is continuing and the lava lake is deepening.

By |2021-03-24T09:38:18-07:00March 24th, 2021|Our Amazing Earth|0 Comments

A Lighter Side of Lithium – Part 2

Meeting increased demand for lithium has a dark side of potentially damaging the environment and public health – but fortunately there is also a lighter side. Recycling can reclaim valuable metals including lithium from the battery packs that might otherwise end up in landfills. Together, recovery from other industrial operations and recycling could eventually reduce the need to wrestle new metal supplies out of the ground.

By |2021-03-04T07:36:47-07:00March 4th, 2021|Our Amazing Earth|6 Comments

A Lighter Side of Lithium – Part 1

Electric vehicles (EVs) are the wave of the future. Improvements in lithium-ion battery packs are occurring rapidly and prices are falling. Obtaining sufficient lithium to meet the growth ahead for EV has a dark side, involving open-pit mining and brine evaporation pools that can be devastating for the environment. Fortunately, there is also a lighter side that is gaining momentum.

By |2021-02-25T16:59:27-07:00February 25th, 2021|Our Amazing Earth|4 Comments

Where Lithium Lurks

The demand for lithium is increasing dramatically – and sources of this metal are being sought from the high elevations of the Andes Mountains to the lowlands of Australia. Lithium is widely distributed on our planet, but since concentrations of this metal are typically quite low, relatively few ores that are economical to mine have been found to date. There are currently three major sources.

By |2021-02-19T13:51:39-07:00February 18th, 2021|Our Amazing Earth|4 Comments

Earthquakes, Copper and Helicopters

Geologists love to have a bird’s eye view of landscapes. They are helpful for all types of research - tracing active faults and identifying copper ore deposits among them. In this post there are two stories about geology fieldwork - one about earthquakes in Egypt and the other about copper in Chile, tied together by arid landscapes and helicopters.

By |2021-01-28T20:13:15-07:00January 28th, 2021|Our Amazing Earth|6 Comments

Encounters with the ENSO – Part 2

El Niños, the warm phase of the El Niño-Southern Oscillation (ENSO) climate pattern, could be devastating for ancient Andean societies. Direct evidence of these events is scarce, but clever archaeological sleuthing has revealed details of event recurrence – and desperate measures taken by authorities to stop destructive flooding.

By |2021-01-23T11:33:01-07:00January 21st, 2021|Ancient Andean Cultures, Our Amazing Earth|2 Comments
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