Talk of the Nation

A group of science advocates say the American president should have the basic scientific know-how to understand policy challenges, evaluate options and devise solutions. Ira Flatow and guests discuss how a presidential science debate can help voters decide if a candidate is up for the job.

A new study shows eligible voters who favored whites over blacks- either consciously or unconsciously- also favored Republican candidates relative to Barack Obama. Psychologist Anthony Greenwald discusses the results and why racial attitudes continue to predict voter preference in 2012.

Three days after Vice President Joe Biden voiced his own support, President Barack Obama described his "evolution" on the issue and became the first sitting president in U.S. history to declare himself in favor of same-sex marriage. Listeners react to the news.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan in Washington. To all appearances, Chris and Lisa Faris seemed to have it all together. He rose through the ranks of the U.S. Special Operations Command to become its top enlisted man, command sergeant major, and his wife tended to their family and many others on his long deployments.

Aid work is often seen as tough, but rewarding. In a recent blog post, Quinn Zimmerman offered a more nuanced take on his work in Haiti. He wrote about his frustrations with locals, fellow aid workers, and himself, for expecting something more than the reality on the ground could deliver.

In an interview with ABC News, President Barack Obama said, "It is important for me to go ahead and affirm that I think same-sex couples should be able to get married." NPR's Ken Rudin discusses the president's comments.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan in Washington. It's official: Gary Johnson lands the Libertarian presidential nomination. Former standard-bearer Ron Paul picks up GOP delegates. And Democrats wonder about the pace of evolution. It's Wednesday and time for a...

VICE PRESIDENT JOE BIDEN: Absolutely comfortable...

CONAN: Edition of the political junkie.

PRESIDENT RONALD REAGAN: There you go again.

VICE PRESIDENT WALTER MONDALE: When I hear your new ideas, I'm reminded of that ad: Where's the beef?

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NEAL CONAN, HOST:

The fall of Colonel Moammar Gadhafi's regime in Libya was hailed as one of the great successes of the Arab Spring. More than six months later, attacks continue on the prime minister's compound and well-armed mercenary fighters and stockpiles of weapons have made their way into Sub-Saharan Africa.