FREDDIE GRAY CASE: Jury In Porter Trial Expected To Be Seated Wednesday; Opening Arguments Could Also Begin | LIVE BLOG | WJZ Will Have Complete Coverage Of Officer Porter's Trial At 11 p.m.

Clean Air

Breathing Easier? Satellites Show The Air Down Here On Earth Is Cleaner Than It Used To BeIt's not just space NASA focuses on. A fleet of satellites also studies the Earth. That vantage point is showing most of us are breathing cleaner air.
Auto Emissions Fell 20% In 5 YearsAmerica's CO2 emissions may have reached a 20-year low. But why?
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