Monitoring Air Pollution Worldwide

July 27, 2017 12:04 AM
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Every second, millions of tons of various gases rise from the surface of the earth into the atmosphere. Many of them are man-made and harmful, contributing massively to pollution and consequently to global warming. The European Space Agency, ESA, is slowly building a network of satellites that will help scientists create a real-time global map of the health of our planet. VOA's George Putic reports.