Celebrating Earth Day in 2014
Apr22

Celebrating Earth Day in 2014

What does Earth Day mean in 2014? “At a conference in Seattle in September 1969, I announced that in the spring of 1970 there would be a nationwide grassroots demonstration on behalf of the environment and invited everyone to participate. The wire services carried the story from coast to coast. The response was electric. It took off like gangbusters.” ~ Gaylord Nelson The media loved the story. In 1969, when Senator Gaylord Nelson...

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Landsat Data Continuity Mission launches
Feb19

Landsat Data Continuity Mission launches

Great day for a launch: all indications positive for Landsat 8. By Liza Lester, ESA communications officer.   AT 10:02am local time on Monday, February 11, 2013, the Landsat Data Continuity Mission (LDCM) launched from Vandenberg Air Force Base, California, into a clear blue sky atop an  Atlas V rocket. The latest USGS earth observatory satellite is a $855 million investment in the future of a 40-year continuous land imaging...

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Landsat 5 update: Thematic Mapper incommunicado
Jun05

Landsat 5 update: Thematic Mapper incommunicado

End of routine acquisitions for the Thematic Mapper, secondary sensor is still sending data. [update, March 2014: the Landsat 8 mission launched successfully last year and the new satellite is sending great data back home. USGS decommissioned Landsat 5 in 2013.] By Liza Lester, ESA communications officer. The US Geological Survey’s Landsat 5 Thematic Mapper has been a faithful friend to ecologists. Recoding image data in seven bands...

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Solutions for a nitrogen-soaked world

Overabundance of an essential nutrient is not always a good thing. - by Liza Lester, ESA communications officer. A tractor spreads manure. Excess fertilizer seeping out of fields has a host of consequences for ecological systems and human health. Credit, flickr user eutrophication&hypoxia, 2010.   NITROGEN is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion and a fertilizer that feeds...

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Goodbye, Landsat 5
Dec15

Goodbye, Landsat 5

This post contributed by Liza Lester, ESA communications officer Four hundred miles above the Earth’s surface, a satellite slides into lonely oblivion. After collecting and broadcasting earthly imagery for a remarkable quarter century past its expected 3-year lifespan, Landsat 5 is failing. Over the years, US Geological Survey engineers have contrived quite a few patches and work-arounds for malfunctions on board their distant charge,...

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