Baseball star Roger Clemens goes on trial for a second time Monday on charges that he lied to a congressional committee about using steroids and human growth hormone. His trial on perjury and obstruction charges last summer ended abruptly when prosecutors mistakenly showed the jury evidence that the judge had ruled inadmissible.

Clemens won a record seven Cy Young awards during his storied pitching career, but prosecutors contend that he used steroids and human growth hormone to prolong that career.

Last year, the number of homeless U.S. veterans on a given night dropped 12 percent from the year before. But tens of thousands were still on the streets, and more could be joining them as troops return from Afghanistan and Iraq. President Obama has vowed to end veterans' homelessness by 2015.

Homeless No More

James Brown left the Army in 1979. And for most of the next 32 years, he lived on the streets in and around Los Angeles. You might have seen him: the dirty, disheveled guy trying to keep warm in a cardboard box.

"Americans now walk the least of any industrialized nation in the world," says writer Tom Vanderbilt. To find out why that is, Vanderbilt has been exploring how towns are built, how Americans view walking — and what might be done to get them moving around on their own two feet.

Talking with Morning Edition co-host Steve Inskeep about what is wrong with Americans' relationship with walking, Vanderbilt says, "The main thing is, we're just not doing enough of it."

One in four women has had a migraine. And, it turns out, the debilitating headaches affect three times more women than men.

But why?

Decades ago, these headaches were attributed to women's inability to cope with stress, a sort of hysteria. Now experts are starting to figure out the factors that really make a difference.

Today scientists know a migraine is all in your head — but not in that old-fashioned sense. Migraines are biologically based, and they play themselves out as a wave of electrical activity traveling across the brain.

On today’s Your Call, we’ll have a conversation about independent record stores. April 21st  is Record Stores Day. With over 700 independently owned record stories, what’s the value of a brick-and-mortar outlet selling music in the digital age? Join us at 10 or email feedback@yourcallradio.org. How have the economics of running an independent record store changed? Do record stores still matter now that you can download just about anything? It’s Your Call, with Rose Aguilar and you.

Guests:

Wade Mainer in the early 1940s, when he and his Sons Of the Mountaineers band were among the most popular acts on the radio.

Moderator Dana Rodriguez with author Gerry Nachman.

It's that time of year again – tax week.

With the deadline for Americans to file their income taxes looming, there's a good chance you've heard or will hear from politicians, on cable news and on talk radio about those who pay little or no taxes.

House Majority Leader Eric Cantor has said that we "have a situation in this country where you're nearing 50 percent of people who don't even pay income taxes." There are even those who say that there are nearly 50 percent of Americans who pay no taxes at all.

In today''s (Apr. 15, 2012) show, I shared some career (and life) lessons I learned from my dad and callers shared theirs. I think it was a particularly warm and instructive show.

On today's show (April 15, 2012,) listeners and I shared lessons we learned from our parents.  If there was a common thread is that many fathers, didn't explicitly teach lessons about the value of hard work, but did work hard. And rather than being dubbed with a pathological moniker such as "workaholic" or "unable to convey feelings," the callers and I agreed that such people--man or women--are more wisely described as unsung heroes. I think you'll enjoy this show. It was filled with heart and useful reminders.