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Travels in Geology: Mid-ocean volcanic excursion: The calderas and caldeiras of the Azores

The Azores, a volcanic island chain spanning more than 600 kilometers, may be diminutive and difficult to find on the map, but the islands offer oversize opportunities for sightseeing and adventure that are sure to appeal to almost any traveler, particularly those with an eye for natural and geologic scenery.

18 Feb 2019

Sounding Out Earth's Hum

Scientists are working to isolate and identify the various sources and mechanisms, beyond earthquakes, that vibrate the solid earth. The search has led them offshore to investigate how wind and waves and the seafloor interact to produce a symphony of sound that humans can’t hear.

11 Feb 2019

Redefining Dinosaurs: Paleontologists are Shaking the Dinosaur Family Tree to its Roots

A radical reconfiguration of the classification of dinosaurs challenges an orthodoxy built on roughly a century and a half of research. But many paleontologists are not ready to accept such a big shift in our understanding of dinosaur evolutionary history.

04 Feb 2019

Getting there and getting around Tibet

Tibet is a long way from most everywhere. There are no direct flights from North America, so it’s usually cheapest and most convenient to fly into a major Chinese city such as Beijing and then catch the next flight to Lhasa Gonggar Airport (LXA). Air China, Tibet Airlines, Sichuan Airlines and China Southern are among the carriers offering direct and connecting flights to Lhasa from most major Chinese cities. Sichuan Airlines and Air China also provide nonstop service from Kathmandu, Nepal. The Lhasa airport is located 65 kilometers south of the city center and takes about an hour to reach.

17 Jan 2019

Travels in Geology: Lhasa, Tibet: Journey to the roof of the world

On a trip to the Tibetan capital of Lhasa, one of the world’s highest cities, you can cross the Eurasian- Indian collision suture zone, admire the sparkling turquoise waters of sacred Yamdrok Lake, tour hidden monasteries belonging to different Buddhist sects, and marvel at Mount Everest, the world’s tallest mountain.
17 Jan 2019

Eyes in the sea: Swarms of floating robots observe the oceans

Swarms of small, inexpensive, autonomous robots that can be deployed over a large area for a long time are changing how oceanographers work. The robots can rise and sink to different depths, swim against vertical currents, synchronize their movements and be tracked underwater. The sampling possibilities are nearly endless.
02 Jan 2019

Revealing the ghosts of glaciers past

On the ground, it’s hard to fathom the effects that glaciers once had on the now nearly ice-free Rocky Mountains, but from the air, the landscape is clearly haunted by the ghosts of glaciers past. In 2015, pilot and photographer Garrett Fisher set out in his antique 1949 Piper Cub aircraft to photograph all the remaining glaciers in the American Rockies. 
18 Dec 2018

Getting There and Getting Around Washington, D.C.

Washington, D.C., is served by three major airports: Ronald Reagan National Airport (DCA), Dulles International Airport (IAD) and Baltimore-Washington International Thurgood Marshall Airport (BWI). Reagan National is closest to downtown and is conveniently served by the Metro subway system. For those with window seats, flights in and out of DCA offer views of the Piedmont-Coastal Plain boundary along the Potomac River, in addition to exciting views of the National Mall. Dulles is a roughly 45-kilometer drive west of downtown D.C. in the exurbs of Northern Virginia. Window-seaters approaching IAD can spy quarries excavating rocks from the Culpeper Basin, as well as the Blue Ridge Mountains to the west. Flights to BWI, about 50 kilometers north of downtown D.C., offer views of the Chesapeake Bay and its tributaries draining the Coastal Plain. The airport is served by a commuter train that runs to Union Station, Washington’s downtown rail hub adjacent to the U.S. Capitol. Automobile traffic in and around the city is often heavy, and a cab or rideshare from IAD or BWI into the city can take upwards of an hour. Rail service aboard Amtrak into Union Station, which is on Metro’s Red Line, may be a convenient option for some visitors to D.C.

11 Dec 2018

Travels in Geology: Touring the Capital Geology of Washington, D.C.

This month, the American Geophysical Union will host its annual fall meeting in Washington, D.C. Take a tour of the city’s unexpected geology, showcased in both natural rock outcrops and the capital’s diverse suite of building stone found in museums and monuments on the National Mall.
07 Dec 2018

Travels in Geology: Jewel of the Apennines: Italy's Monti Sibillini National Park

The landscape of the central Apennines is a manifestation of the geological processes that have acted on this region for more than 200 million years. It is a place where human history is closely tied to the terrain: a relationship that has produced terrific rewards of agriculture and art, as well as great catastrophes from earthquakes and landslides. 
14 Nov 2018

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