Space station astronauts repaired a crippled cooling system during a rare Christmas Eve spacewalk Tuesday, braving a "mini blizzard" of noxious ammonia as they popped in a new pump.

It was the second spacewalk in four days for U.S. astronauts Rick Mastracchio and Michael Hopkins, and only the second Christmas Eve spacewalk ever.

Tablet computers are so easy to use that even a 3-year-old can master them.

And that has some pediatricians and other health experts worried.

Maybe it was getting his first video game, Cosmic Avenger, for Christmas at the age of 12, and then having to wait an entire year for the hard-to-land Colecovision console to play it on that made Michael Thomasson so determined to get his hands on every video game and system he could find.

Now, 31 years and roughly 11,000 games later, Thomasson is the newly crowned world record holder for having the largest collection of video games. He is featured in a two-page spread in the just-released "Guinness World Records 2014 Gamer's Edition."

Already in the swing of parenting, Roger Federer is getting ready for a larger family.

The tennis star says on Twitter that he and his wife, Mirka, are expecting another child next year.

California hospitals are spreading holiday cheer for new parents by delivering newborns in giant Christmas stockings.

The bright red stockings were provided this week for babies born at Long Beach Memorial Medical Center in Redlands, California. The Long Beach Press-Telegram says it's a half-century-old tradition.

A year ago, Miley Cyrus was no stranger to us, of course. But who could have guessed how her star would rise — or rather, explode — in 2013, making this former preteen idol one of the most watched people on the planet? And so it seems only right to make Miley our tour guide (Kim and Kanye, you came close!) as we take our annual, highly selective, chronological tour through the year's pop culture moments:

JANUARY

Ben Stiller's commonality with the hero of his new film hasn't gone unnoticed.

"The Secret Life of Walter Mitty," starring and directed by Stiller, is adapted from James Thurber's classic short story that first appeared in The New Yorker in 1939. Since then, Walter Mitty (a mild-mannered man who enlivens a mundane day with a series of fantasies) has been synonymous with daydreaming and flights of imagination.

"Anything goes" was the guiding ethos for Martin Scorsese and Leonardo DiCaprio in making their extravagant dark comedy of Wall Street excess, "The Wolf of Wall Street."

"We would look at each other and ask, 'Are we going too far?'" says DiCaprio. Rarely was the answer "yes."

Miami's Michael Beasley sank two free throws with 9.2 seconds left to give the Heat a 121-119 overtime victory over Atlanta on Monday, opening a six-and-a-half game lead over the Hawks atop the NBA Southeast Division.

Other key results on Monday included Dallas' victory over state rival Houston with Dirk Nowitzki leading the way, the other Texan team San Antonio defeating Toronto, and Indiana winning comfortably again by bouncing Brooklyn.

Arsene Wenger failed for the 10th time to get the better of Jose Mourinho as Arsenal was held to a 0-0 draw by Chelsea on Monday, missing a chance to return to the top of the Premier League.

The London derby, played with rain swirling around the Emirates Stadium, failed to produce the drama expected, with few attempts on goal.