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In 1990, slow-moving pahoehoe lava from Kilauea Volcano gradually spread through the community of Kalapana, burning homes and covering parks, roads, and gardens. (Image courtesy of USGS)

Sensing Remote Volcanoes

In October 2001, a volcano in the remote South Sandwich Islands began spewing ash and lava. Less than 24 hours after the eruption began, a research team nearly 9,000 miles away was estimating how much energy the volcano was producing.
Feature Article
July 28, 2020
The false-color image above is a MODIS image, captured on January 2, 2001, shows the extent of snow cover over the north-central United States.

Scientist for a Day

More than 1,750 children in the U.S. Upper Midwest had the chance to become scientists for a day thanks a program at the University of Toledo.
Feature Article
July 28, 2020
The image above shows the mouth of the Amazon River.

River Seasons

Amazon discharge is affected by periodic El Niño events.
Feature Article
July 28, 2020
The image above is from TOPEX/Poseidon on 10 November 1997.

Rising Above Tide Gauges

TOPEX/Poseidon data help a scientist find a rise in global mean sea level.
Feature Article
July 28, 2020
The abandoned Copper River and Northwestern Railway near Strelna in south-central Alaska illustrates how building a railroad on permafrost thaw can cause the railroad bed to settle unevenly.

Riding the Permafrost Express

Researchers use innovative techniques to protect the newly constructed Qinghai-Xizang railroad across the Tibetan Plateau from permafrost.
Feature Article
July 28, 2020
The Yangtze Delta is home to more than eighty million people in an area only a little larger than the state of Indiana.

Repatterning the World

As wildlands shrink, scientists study the ecologies that people have tamed.
Feature Article
July 28, 2020
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