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Construction update at US89 landslide

Heavy construction has been underway since this summer on building a giant buttress below the landslide that closed US highway 89 southwest of Page. ADOT has a webpage with updates on the work, but also posts updates on their blog with the latest on September 3. Show More Summary

M2.0 earthquake near Fredonia

There was a magnitude 2.0 earthquake at 10:15 p.m. local time last night, about 9 miles ENE of Fredonia. [Right, orange star marks the epicenter. Credit, USGS]

Sluggish Fly on A Pyritic Boulder

It's not like it's a meme or anything, but I saw a sluggish fly on limestone at Really Going Places — after taking these photos on the first day of November — and thought, what an opportune time to post photos of this fly, also sluggish, on a pyritic parking lot erratic (glacial erratic? not sure). Show More Summary

Icelandic volcano sits on massive magma hot spot

New research from University of California Davis and Aarhus University in Denmark shows that high mantle temperatures miles beneath the Earth's surface are essential for generating large amounts of magma. In fact, the scientists found that Iceland's Bardarbunga volcano lies directly above the hottest portion of the North Atlantic mantle plume.

If These Cliffs Could Talk: Leaning Tower and Bridalveil Fall in Yosemite

Bridalveil Fall and Leaning Tower on Sunday afternoon Nature abhors cliffs as a general rule. Gravity dictates that cliffs will be a rarity in most parts of the world, because most rocks are simply not capable of resisting the intense stresses the cliffs cause. Show More Summary

Mysterious Midcontinent Rift is a geological hybrid

A team of geologists has a new explanation for the formation of the Midcontinent Rift, an ancient 2,000-mile-long underground crack that starts in Lake Superior and runs south. The rift is a geological hybrid, having formed in threeShow More Summary

Update from the Road: It's Finally Fall

So there I was, traveling west on I-80 late last week — just after our first rain sans snow (except for at the high elevations of a few mountains east of the Sierra, like the Humboldt and Sonoma Ranges, which top out at 9836 and 9396...Show More Summary

The breathing sand

New analytical methods show for the first time, how the permeable, sandy sediment at the bottom of the North Sea is supplied with oxygen and which factors determine the exchange. Based on the detailed investigation and new measurement...Show More Summary

Seeing Half Dome from California's Great Valley

It isn't easy to see... There aren't many places where one can do it, and there aren't many days when the air is clean enough to allow it, but the iconic cliffs of Yosemite Valley, Half Dome and El Capitan, are visible from the Great Valley of California (sometimes called the Central Valley, and the southern half the San Joaquin Valley). Show More Summary

New tracers can identify frack fluids in the environment

Duke scientists have developed geochemical tracers to identify hydraulic fracturing flowback fluids that have been spilled or released into the environment. The tracers have been field-tested at two sites and can distinguish fracking fluids from wastewater versus conventional wells or other sources. Show More Summary

How it Was Today: Sunset at the Gateway in Yosemite

So, yesterday was work. I simply had to take those students to Yosemite Valley, let them get cold, experience nature and all, and learn stuff. Someone needs to do it. Today, I knew I needed to go back. There were just too many times that I wanted to stop the bus, jump out and snap a few pictures. Show More Summary

Tohoku tsunami created icebergs in Antarctica

A NASA scientist and her colleagues were able to observe for the first time the power of an earthquake and tsunami to break off large icebergs a hemisphere away....

A billion-year-old piece of North America traced back to Antarctica

An international team of researchers has found the strongest evidence yet that parts of North America and Antarctica were connected 1.1 billion years ago, long before the supercontinent Pangaea formed....

Scientists discover new eruption at undersea volcano, after successfully forecasting the event

A team of scientists just discovered a new eruption of Axial Seamount, an undersea volcano located about 250 miles off the Oregon coast -- and one of the most active and intensely studied seamounts in the world. The event is intriguing because the scientists had forecast the eruption starting five years ago -- the first successful forecast of an undersea volcano.

New data shows El Mayor-Cucapah earthquake was simple on surface, complicated at depth

Like scars that remain on the skin long after a wound has healed, earthquake fault lines can be traced on Earth's surface long after their initial rupture. Typically, this line of intersection between the area where the fault slips and the ground is more complicated at the surface than at depth. Show More Summary

Deep recycling in the Earth faster than thought

The recycling of the Earth's crust in volcanoes happens much faster than scientists have previously assumed. Rock of the oceanic crust, which sinks deep into the earth due to the movement of tectonic plates, reemerges through volcanic eruptions after around 500 million years.

Oxygen's watery past

Research from MIT suggests O2 may have been made on Earth hundreds of millions of years before its debut in the atmosphere, keeping a low profile in "oxygen oases" in the oceans. The MIT researchers found evidence that tiny aerobic organisms may have evolved to survive on extremely low levels of the gas in these undersea oases.

Tsunami observed by radar

The tsunami that devastated Japan on March 11 was picked up by high-frequency radar in California and Japan as it swept toward their coasts, according to US and Japanese scientists. This is the first time that a tsunami has been observed by radar, raising the possibility of new early warning systems.

Arctic ice melt could pause in coming decades

Despite the rapid retreat of Arctic sea ice in recent years, the ice may temporarily stabilize or somewhat expand at times over the next few decades, new research indicates....

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