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NASA Satellites Reveal Warming Trend
Since 1981, scientists have used the Advanced Very High Resolution Radiometer (AVHRR), flying aboard the NOAA series of polar-orbiting satellites, to record the Earth’s land “skin” temperature. Unlike surface-based measures that typically use thermometers to record air temperature between 2…
Chernobyl, Ukraine
On April 26, 1986, the world’s worst nuclear power accident occurred at the Chernobyl Nuclear Power Plant near the Ukrainian-Belarus border. Toxic radionuclides like Cs137 and Sr90 contaminated an area of 155,000 square kilometers in what is today Belarus, Ukraine…
ASTER Views the Himalaya
Soaring, snow-capped peaks and ridges of the eastern Himalaya Mountains create anirregular white-on-red patchwork between major rivers in southwestern China. TheHimalaya are made up of three parallel mountain ranges that together extend morethan 2,900 kilometers.This scene was acquired by the…
The A38-B Iceberg Splits
Between April 12 and April 15, the A38-B iceberg split in half. The split was recorded in this series of Moderate Resolution Imaging Spectroradiometer (MODIS) images. The iceberg was originally part of the massive A-38 iceberg, which broke from the…
Joanne Simpson (1923-2010)
Joanne Simpson became the first woman Ph.D. meteorologist. She also pioneered studies of cloud models, hurricanes, weather modification, and guided the development of the Tropical Rainfall Measuring Mission.
Martian Landscape, Antarctica
Of all the diverse landscapes on Earth, the McMurdo Dry Valleys in Antarctica may be the most like Mars. Extremely cold and extremely dry, the Dry Valleys arelocated near McMurdo Sound on the coast of Antarctica (roughly 77° South, 161°…
Significant Event Report for Week Ending 4/23/2004
Cassini Significant Event Report For Week Ending 04/23/04 The most recent spacecraft telemetry was acquired from the Goldstone tracking station on Wednesday, April 21. The Cassini spacecraft is in an excellent state of health and is operating normally. Information on…
Mt. Ruapehu, New Zealand
All around the world, people live in places where the threat of natural disaster is high. On the North Island of New Zealand, the Mount Ruapehu volcano is just such a threat. A towering, active stratovolcano (the classic cone-shaped volcano),…
The Lure of the Rings
Background Information: Hubble’s Top Ten Science Findings In its 14-year lifetime of surveying the heavens, the Hubble Space Telescope has witnessed the birth of stars, has looked far across the universe to see young galaxies, and has provided proof that…
Great Dyke, Zimbabwe
The Great Dyke in the southern Zimbabwe Craton is one of the most remarkable rock formations in the world. A “craton” is a term geologists use to describe Earth’s oldest continental regions. These thick and very hard layers of rock…
East Fork Fire Burn Scar
By April 18, 2004, the East Fork Fire in the Apalachicola National Forest in western Florida was about 90 percent contained. Reports from the Bureau of Land Management and U.S. Forest Service’s Southern Area Coordination Center list the cause of…
Kyiv, Ukraine
Kyiv is rich in the history of western civilization. It was a trade center on the Baltic-Black Sea route in the 11th and 12th centuries, and one of the major cities in the Christian world, until Mongol invaders destroyed the…
Harrat Al Birk, Saudi Arabia
Dark-colored volcanic cones sprout from an ancient lava field known as Harrat Al Birkalong Saudi Arabia’s Red Sea coastline. Many such lava fields dot the ArabianPeninsula and range in age from 2 million to 30 million years old.This image was…
Endangered Species Habitat Damaged by the 2003 California Fires
In fall of 2003, southern California experienced the worst fire season in the state’s recorded history. Among the scores of losses caused by the fires was the damage and destruction of habitat for four species of animals listed as endangered…
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