How do astronauts take a bath in space? What happens to their sense of smell in a weightless environment? Two NASA astronauts aboard the International Space Station discuss the challenges of life in low Earth orbit and how their research is a stepping stone for future space exploration.

After saying Thursday morning on The Today Show that she thought her son's death "was an accident," Trayvon Martin's mother went on other news broadcasts later in the day to say she only thinks the encounter between her son and George Zimmerman was accidental.

Days after it was acquired by Facebook for $1 billion, reports have emerged that Instagram now has more than 40 million users in its photo-sharing community. The gain, which was derived from the service's API, represents a spike of 10 million Instagram users added in the past 10 days, according to Venture Beat.

Still haven't filed your federal income tax return?

Since you may be a procrastinator, you may not have looked at the calendar lately. So we want to make sure you know that Sunday is April 15th.

But you also might not have realized that this year the deadline is the 17th.

Why?

We meet Claudia McClean, who is the Claudia behind  Claudia’s Handpainted Yarn in Harrisonburg. She says that four words repeat like a mantra in her mind as she knits:  peace, love, comfort, joy.

Transcript

MICHEL MARTIN, HOST:

Switching gears now, often, stories about politicians in their off hours take on kind of a scandalous turn. Not this one. When Newark, New Jersey Mayor Cory Booker went home last night, his neighbor's house was on fire. A woman who had escaped the inferno told him that her daughter was trapped inside and what happened next is something really out of an action movie, with Cory Booker in the starring role.

Here's Newark Fire Director Fateen Ziyad describing the scene to New York station WABC.

Transcript

MICHEL MARTIN, HOST:

This is TELL ME MORE from NPR News. I'm Michel Martin. Coming up, we will hear the latest entry in our Muses and Metaphor series for National Poetry Month. Those are our tweet-length poems. We'll have another one in just a few minutes.

But first, we turn to election news and a controversy that's keeping the battle for women voters in the spotlight. Polls show women voters strongly favor President Barack Obama over presumptive Republican nominee Mitt Romney.

In honor of Tax Day, we meet merry CPA Lawrence Yoder, who seemingly couldn't be any happier.   Each finished return satisfies like fitting-in the last piece of a jigsaw puzzle. 

Every year, millions of Americans scramble to file their income taxes before the filing deadline — ordinarily April 15.

But procrastinators get a reprieve this year: The 2012 deadline falls on Tuesday, April 17.

This year, April 15 falls on a Sunday. One might expect that would make Monday, April 16, the 2012 filing deadline.

But not so this year. Monday is the District of Columbia's Emancipation Day — a local holiday unfamiliar to most Americans.