Browsing Tag 'nitrogen'
by Liza Lester, ESA communications officer The urban density of Baltimore, MD, acquired by Landsat 7, January 1 – December 31, 2001. NASA images by Robert Simmon, based on data from the National Land Cover Database. Caption by Holli Riebeek. Yellow highlight outlines the general location of Watershed 263.______________________________________________ IN the first summer after my [...]
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By Nadine Lymn, ESA Director of Public Affairs Last night was the 18th consecutive year that researchers and policymakers came together over finger food and beverages to talk about the science and education projects funded by the National Science Foundation (NSF). “STEM Research and Education: Underpinning American Innovation” is sponsored by the Coalition for National [...]
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By Liza Lester, ESA communications officer. RYAN Hueffmeier wants to talk to you about the humble earthworm. Trusty fish bait, friend to schoolchildren, gardeners and composters, the earthworm is no friend to the hardwood forests of the Great Lakes. It is a European invader, and its decomposition services, well known to gardeners, are not helpful [...]
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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 [...]
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This post contributed by Liza Lester, ESA communications officer. As winter storms pick up along the California coast, a harvest of giant kelp comes ashore with the tides, torn from seafloor anchorages by the rough action of waves. Waves are the most powerful force shaping the kelp forest, superseding the influence of temperature, nutrients, and [...]
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