Earth Topics
Space, Inc.
2002 — April 6, 2011
NASA and other government agencies are helping the commercial space industry get off the ground by validating and buying satellite data.
City-swallowing Sand Dunes
2002 — April 6, 2011
NASA-supported researchers are studying the complex Physicsof migrating sand dunes--a grave concern in nations where the relentless advance of desert dunes is a serious threat to habitation and agriculture.
Urban Sprawl: the Big Picture
2002 — April 6, 2011
Earth-orbiting satellites are collecting valuable data that reveal the environmental impact of fast-growing cities.
Muddy Waters
2002 — April 6, 2011
Is it safe to swim in your local lake? Are the fish from that lake good to eat? Earth-orbiting satellites are plumbing the depths of muddy waters to find the answers.
Unveiling Planet Ocean
2002 — April 6, 2011
NASA's GRACE mission will reveal some of what lies hidden beneath the surface of Earth's oceans by measuring tiny changes in gravity.
Easing off the (Greenhouse) Gas
2002 — April 6, 2011
Greenhouse gases are still accumulating in Earth's atmosphere, but more slowly than before, say NASA-funded researchers.
The Edge of Sunshine
2002 — April 6, 2011
Solar energy is an abundant source of power for spacecraft navigating the inner solar system. But how far away from our star can photovoltaics work?
Rift Valley Fever
2002 — April 6, 2011
Scientists are learning that the key to predicting certain epidemics -- like Rift Valley fever in Africa or Hanta virus in the U.S. -- lies in an unexpected place: the ocean.
Clouds in the Greenhouse
2002 — April 6, 2011
As vexing as they are beautiful, clouds play an important role in Earth's planetary greenhouse.
Earthgazing, NASA-style
2002 — April 6, 2011
Earth scientists love it when Astronautspeer through the space station's extraordinary Destiny Lab window.