The CambridgeSide Galleria was bustling with people exchanging gifts and taking advantage of sales the day after Christmas 2011. Suzanne Kreiter/The Boston Globe via Getty Images hide caption

itoggle caption Suzanne Kreiter/The Boston Globe via Getty Images

Some people just aren't into the big Thanksgiving Day extravaganza. Stuart Monk / hide caption

itoggle caption Stuart Monk /

President Obama dances with first lady Michelle Obama on the night of his inauguration, Jan. 20, 2009, in Washington. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Mitt Romney talks to reporters on his campaign plane on Election Day. "I'm very proud of the campaign we've run," he said. "No campaign is perfect." Emmanuel Dunand/AFP/Getty Images hide caption

itoggle caption Emmanuel Dunand/AFP/Getty Images

The presidency has remained a male-only office throughout American history. Despite changing demographics and huge gains by women in other walks of life, some experts still don't see a female president on the horizon. Joshua Roberts/Getty Images hide caption

itoggle caption Joshua Roberts/Getty Images

Wall-E fell in love with another robot in the movie named after him. Researchers have yet to create a sentient machine, but a breakthrough could be on the horizon. John M. Heller/Getty Images hide caption

itoggle caption John M. Heller/Getty Images

According to recent reports from a research team led by Australian biologist Monica Gagliano, some plants such as chili peppers may be able to "hear" other plants. hide caption

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A capuchin monkey riding a dog. Tim Lepard, owner and creator of the Monkey Rodeo, says his animals are treated humanely. Courtesy of Tim Lepard hide caption

itoggle caption Courtesy of Tim Lepard

Whatever you think about the candidates, we can all agree both have been punching bags for their opponents. Chris O'Meara/AP hide caption

itoggle caption Chris O'Meara/AP

Fans wear President Obama and Mitt Romney masks at the Atlanta Braves-Miami Marlins game Sept. 25 in Atlanta. One of many quirky election year predictors is based on which candidate's likeness sells better as a Halloween mask. David Goldman/AP hide caption

itoggle caption David Goldman/AP