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What makes some middle-aged men and women act like children at the baseball park? Commentator Alva Noë wonders about that distinct attitude of love and longing that we call "being a fan."

Looking for extraterrestrial smog may be a good way to search for alien intelligence, according to a Harvard researcher.

Airlines have the right to refuse a passenger suspected of having Ebola. But if you're sick with a contagious disease, what are your rights when it comes to canceling and refunds?

There are countless programs to help veterans readjust to civilian life. One of the most unusual is in San Diego, where vets get together in a caged boxing ring and punch each other in the face.

Hashim Khan was a legendary squash player who started out as just a ball boy, practicing the game barefoot when others left the courts in Pakistan. He went onto become an internationally renowned player and began a Khan dynasty in the sport. Khan died on Monday, believed to be 104 years old. James Zug writes for Squash magazine, and he speaks of Khan.

One of the worst byproducts of our industrial society is air pollution. It's a global problem that humans have yet to get under control. One scientist thinks we might not be alone, though. Alien civilizations may be polluting their worlds, and that pollution might be one way to detect them.

Russia has sent a large number of trucks into eastern Ukraine without the authorization of the Ukrainian government or Red Cross supervision. Moscow says the trucks are carrying aid for civilians, but the Ukrainians — together with NATO, U.S. and European leaders — say the move is a violation of Ukrainian sovereignty.

The death of Brazil's Socialist Party presidential candidate created an opportunity for his running mate, Marina Silva. Her entry into the race has upended the situation. Whereas the man she replaced was running a distant third in polls, support for Silva has surged.

As the situation quiets down in Ferguson, Mo., some political observers are asking why it took President Obama so long to publicly weigh in on events there.

It's been another rough August for President Obama. He's wrapping up a summer vacation marred by events in Ferguson, Mo., and the murder of an American journalist in the Middle East.