While carbon dioxide is indisputably a significant factor in the planet's changing climate, scientists and policy experts have faced major troubles in limiting production of the greenhouse gas. Now, some are focusing on other things that warm the planet, especially ozone and black carbon. And the tools to fight them are familiar.
In NASA's Goddard Space Flight Center's "clean room," scientists are working on a revolutionary space telescope that will capture images of the first galaxies, with help from some very frigid temperatures.
Pennsylvania, Ohio and West Virginia are waiting to hear which state Shell Oil will pick to host a huge new chemical refinery. The project would turn ethane gas, produced through "fracking," into ethylene, which is used to make plastics. The venture could be the biggest investment in the region in decades.
Audie Cornish talks with Thomas Haupt, respiratory disease epidemiologist for the Wisconsin Division of Public Health. He's the lead author of the study that helped uncover the source of a mysterious and large uptick in Legionnaires' disease cases. The study, "An Outbreak of Legionnaires Disease Associated with a Decorative Water Wall Fountain in a Hospital" was published in the online journal Infection Control and Hospital Epidemiology.
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