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This NASA map shows the size of aerosol particles in the atmosphere. Green areas indicate larger, more naturally occurring particles like dust. Red areas indicate smaller aerosol particles, which can come from fossil fuels and fires. Yellow areas indicate a mix of large and small particles.

Pollution Playing A Major Role In Sea Temperatures

Tiny particles from power plants and fires help create new clouds, which shade the oceans from the sun. This means changes in sea-surface temperatures. And that has profound effects on weather, influencing the time and amount of rainfall in West Africa, and even the number, strength and path of hurricanes.

Future U.S. senator and presidential candidate John Kerry poses with crewmates during the Vietnam War in this file photo. An attack on his service by a group calling itself the Swift Boat Veterans for Truth is remembered as a turning point in the 2004 election. But political scientists say negative ads might not be that effective.

Do Negative Ads Make A Difference? Political Scientists Say Not So Much

Blistering political ads like the swift boat attacks on John Kerry in 2004 may not be as decisive as politicians think. Political scientists say if voters already know a candidate, negative ads don't have much of an impact.

Supreme Court Doesn't Budge On Push For Cameras

Not one second of the six hours of arguments on the health care law will be either seen or heard in real time by anyone not at the Supreme Court. The nation's highest court has turned down requests to allow live broadcasts of this week's historic proceedings.

Sunday at Walmart

By Jack Greerhttp://stream.publicbroadcasting.net/production/mp3/wmra/local-wmra-935014.mp3Luray, VA – Mr. Greer wrote this third place winning story…

Richard Strauss' iconic opening to <em>Also Sprach Zarathustra</em> evokes a sense of vastness and power, Marin Alsop says.

Alsop Sprach Zarathustra: Decoding Strauss' Tone Poem

Conductor Marin Alsop investigates the alluring power behind the grand opening of Also Sprach Zarathustra.

Putting the shopping bags in the bike basket rather than in the car trunk could deliver big health benefits.

Secret To A Long, Healthy Life: Bike To The Store

Even if people used bikes to run short errands than half the time, it could save more than 1,100 lives a year in 11 Midwestern cities, thanks to reduced air pollution and improved health. That's the word from scientists at the University of Wisconsin, who figured people would bike 4 months out of the year.

Former Michigan State president Lou Anna Simon pauses before testifying during a Senate Subcommittee on Consumer Protection, Product Safety, Insurance, and Data Security, on Capitol Hill in Washington, DC.

Former Michigan State officials were cleared in Nassar sexual abuse investigation

The Michigan Court of Appeals overturned the conviction of the former Michigan State University gymnastics coach and dismissed charges against the school's former president.

Michigan is trying to lure electric car makers

Michigan wants to remain a center of automotive development and manufacturing. As the state faces interstate competition, political leaders are looking to industry incentives.

'Great Circle' Takes Flight Across Decades And Continents

The daredevil aviator in Maggie Shipstead's new novel was inspired by Amelia Earhart. Shipstead says she wants to investigate the difference between death and a disappearance like Earhart's.

Lin-Manuel Miranda attends the opening night premiere of <em>In the Heights</em> at the Tribeca Film Festival last week in New York City.

Lin-Manuel Miranda Apologizes For Lack Of Afro-Latinx Actors In 'In The Heights'

In a Twitter message, the co-creator of In The Heights wrote: "In trying to paint a mosaic of this community, we fell short. I'm truly sorry."

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