“He’s one of the most outspoken and effective advocates for women and girls I know.… As an activist, he’s using those skills to get the world talking about the fact that ending extreme poverty begins with empowering women and girls.” —Melinda Gates, philanthropist and 2013 Woman of the Year

When humanitarian and rock icon Bono learned that he was being honored by Glamour as the first-ever Man of the Year, he called his wife of 34 years, Ali Hewson, to give her the news. “I asked did she think I deserved it. She wasn’t sure,” Bono tells me with a laugh. “She said I’ve work to do!”

U2’s front man has no doubts. “I’m sure I don’t deserve it,” he says. “But I’m grateful for this award as a chance to say the battle for gender equality can’t be won unless men lead it along with women. We’re largely responsible for the problem, so we have to be involved in the solutions.”

I’m on Glamour’s side: I think Bono is the perfect choice for this first-time honor because, now 56, he’s been trying to do good for as long as he’s been making music. I first met Bono, born Paul David Hewson, in Sarajevo over New Year’s 1996, shortly after peace accords ended the Bosnian civil war that November. It was the first time in four years that the guns were silent and the people of that beautiful city could celebrate by taking to the concert halls and cafés. I got pulled into a crowded car one night, heading for a party, and there was Bono. Our two-decade humanitarian friendship was launched.

And while my friend has sold 170 million albums and won 22 Grammys, what I admire most about him is his extraordinary talent for tackling problems that seem intractable—and making mighty and measurable gains. It’s not every superstar (or, for that matter, statesman) who can bring about $100 billion in debt cancellation for 35 of the world’s poorest countries, or persuade the U.S. government to pony up the largest contribution ever for lifesaving AIDS drugs in Africa, as President George W. Bush did in 2004.

Now Bono has created Poverty Is Sexist, a new campaign specifically aimed at helping the world’s poorest women—those who survive on less than $2 a day. “Women bear the burdens of poverty,” Bono says, meaning they are far less likely than men to have access to food, clean water, education, and health care; laws in many parts of the world don’t protect them from sexual violence or allow them to own the land they work. By establishing Poverty Is Sexist, Bono is making it clear that powerful men can, and should, take on these deep-rooted issues.