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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

Getting there and getting around the Causses

Toulouse is the best gateway to the Causses region. Toulouse-Blagnac Airport hosts plenty of flights to connecting cities in Europe, but no direct flights from the United States. Rent a car at the airport and head north to explore the region. The main highway going north to the Causses is well maintained, with fueling stations along the way that offer everything a traveler might need, including showers. Figuring out how to pay for gasoline was tricky — but that’s part of the adventure of travel.

06 Apr 2018

Travels in Geology: Underground awe in France: The caves of the Causses

The Causses du Quercy region in south-central France has been transformed into a karstic wonderland by the slow dissolution of limestone. The resulting caves, which served as shelters for early humans who left their bones, tools and art for us to ponder, are both geologically and paleoanthropologically fascinating.

06 Apr 2018

Pairing geoheritage and economic development: China's Guizhou Province offers a modern model

China’s pace of landscape protection has been as dizzying as its pace of development and the country has emerged as a global leader in geoheritage preservation. Guizhou shows how to recognize and protect geoheritage while also boosting economic development.

27 Mar 2018

Gyres spin up, currents get muddled

In addition to polynya formation and warming-induced surface freshening, other factors may also impact open-ocean convection in the Southern Ocean. The warming atmosphere is shifting global climatic zones and their associated wind fields poleward in both hemispheres. In the Weddell Sea Gyre, one of two clockwise-spinning circulation patterns in the Southern Ocean, this shift has resulted in a dramatic increase in wind stress curl (the strength of the wind’s influence on ocean water flow) over the past two years.

20 Mar 2018

Disrupting the deep: Ocean warming reaches the abyss

Since the 1970s, just 7 percent of the heat associated with humancaused warming has melted snow and ice or warmed the land and atmosphere. The other 93 percent was absorbed by the oceans, where temperatures are now increasing at nearly all latitudes and depths, threatening to fundamentally alter our planet by disrupting ocean circulation. 
20 Mar 2018

Travels in Geology: Corsica: A fusion of cultures on the Mediterranean's most mountainous isle

The rugged topography of the island of Corsica, off the coast of France and Italy, is a blend of rocks of very different ages and origins thrust together during one of Earth's great tectonic uphevals. 
09 Mar 2018

Getting There & Getting Around Corsica

The two largest of Corsica’s four airports, Ajaccio (AJA) and Bastia (BIA), are located on the island’s southwestern and northeastern coasts, respectively. There are no direct flights from the U.S. to Corsica, so it’s usually cheapest and most convenient to fly into Paris and then catch a 1.5-hour flight to the island. Air France and Air Corsica operate connecting flights year-round from most major French cities. During the bustling summer months, other carriers, including the budget airlines EasyJet and Ryanair, offer direct service from numerous European cities. If you prefer to arrive by ferry, several lines, including Corsica Ferries and Moby Lines, offer year-round transport from Marseille, Nice and Toulon, as well as summer routes from several Italian ports.

 
09 Mar 2018

Creeping danger: Landslide threatens Peruvian village, especially when the earth quakes

A massive landslide has been encroaching on the village of Maca, Peru, since the 1980s. Today, it provides geologists with a laboratory to study slow-moving landslides, especially how they react to rainfall and earthquakes.
27 Feb 2018

How do earthquakes impact landslides?

Sensitive instruments installed on and near the slow-moving landslide in Maca, Peru, have allowed scientists to observe the response of the landslide to earthquakes: information that can help researchers predict hazards from other slow-moving landslides in the region and perhaps around the world. But scientists are wondering whether the findings could also shed light on the triggering of fast-moving landslides by earthquakes.

27 Feb 2018

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