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Seveal bookcases in a library

Science Wednesday: Tox21's 10,000 Compound List You've heard of public libraries, school libraries, and academic libraries. But how about a library of 10,000 chemical compounds found in food additives, drugs, industrial processes, and consumer products? Senior science writer Aaron Ferster introduces this library and its use in the cutting-edge research program Tox21.

Lake with lots of algal blooms visible

Science Wednesday: Nitrogen, Think About It What are the dangers of excess nitrogen? Algal blooms that damage marine ecosystems, air pollution that clouds visibility, and acid rain that damages soil, plant, and aquatic life – to name a few. Sarah Blau discusses how EPA research is helping to tackle these issues.


Science Wednesday: Riding in Style Katie Lubinsky describes a ride in EPA's air quality "sniffing machine." The car uses state-of-the-art technology to measure levels of different air pollutants as it drives further from the source. The result: pollution maps that inform researchers and policymakers in protecting public health. Read Katie's blog.

Science Wednesday: What Does National Security Have To Do With The Environment National security today, Drs. Alan Hecht and Joseph Fiksel remind us, is about more than defense against military attacks: it's about the threat of population growth, climate change, and increasing demand for resources to our food, water, and resource security. Learn more in their blog.

Periodic table entry for Radon

Science Wednesday: Five Letter Word for an Inert, Radioactive Gas You wouldn't see it or smell it, but this naturally occurring gas is present in some homes, schools, and office buildings. As the leading cause of lung cancer among nonsmokers, radon deserves your attention. EPA scientist Jack Barnette explains this, how to test for radon in your building, and more in his blog.

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