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Some 39 percent of Americans polled in a survey said they eat less meat now than they did three years ago. Health experts say that's a sign that Americans' attitudes about consuming meat are changing.

Congressional leaders say they are close to a deal on two issues with looming deadlines. But if Congress fails to lock down agreements this week, the federal highway program would come to a halt, and student loan interest rates would double.

In a new autobiography, survivalist and television host Bear Grylls charts his journey from recalcitrant schoolboy to a spot in Britain's elite special forces, the SAS, and addresses the controversy surrounding his Discovery Channel show, Man vs. Wild.

Wednesday is the deadline in Washington State to get a ban on same-sex marriage onto the fall ballot. The legislature legalized gay marriage earlier this year. One of the biggest proponents of the repeal is the Catholic Archdiocese of Seattle. It wants all of its parishes to actively campaign against same-sex marriage, but some are refusing.

The Vatican this week strongly criticized a book on sexual ethics by Sister Margaret Farley, a prominent American Catholic theologian. The rebuke from the Vatican comes as leaders of an organization of American nuns are in their own dispute with Rome. John Allen, of the National Catholic Reporter, talks to David Greene about the disputes.

Behavioral economist Dan Ariely has found that very few people lie a lot, but a lot of people lie a little. He talks about his findings in his new book, The (Honest) Truth About Dishonesty: How We Lie To Everyone — Especially Ourselves.

The rare daytime astronomical event, in which Venus can be seen as a tiny black dot crossing the sun, won't happen again until 2117. Andrea Wulf, author of Chasing Venus, explains how 18th-century astronomers used the event to calculate the distance between the Earth and the sun.

The Fish That Ate the Whale tells the story of Sam Zemurray, a Jewish immigrant who came to the U.S. as a teenager and became one of the biggest players in the banana business. "He's like the American dream in the shape of a single life," says author Rich Cohen.

Dorothy Flood, now 75, has vivid memories of not being allowed in a train dining car as a young black girl. Now, an organization that grants wishes to seniors has sent Flood on an all-expenses paid trip through the Rocky Mountains, in a gourmet dining car.

We hear from veterans about their memories of those who died in combat. Stories are from Jill Knappenberger, who served in the American Red Cross during World War II; former Nebraska Sen. Chuck Hagel, a Vietnam veteran; and Butch Bracknell, an Afghanistan and Iraq serviceman.