1. 12-12-12 Sandy Relief Concert: Now that was one for the record books. What was your favorite performance of the show? I'm curious to hear what you thought. Also, you can still contribute to the cause directly, or in this unique way – bid on concert memorabilia, like an autographed concert poster or Les Paul guitar, at CharityBuzz.

2. Piano Karaoke Tonight: If you need to practice up for Christmas caroling, what better way than to work it out at Piano Karaoke, tonight at Studio 99. Fun begins at 8 p.m.

3. Homosexuality Begins in the Womb: New research suggests that while there may not be a "gay gene," homosexuality is actually a matter of epigenetics, meaning a baby's DNA is influenced by something external during gestation. Specifically, the researchers discovered sex-specific "epi-marks" which, unlike most genetic switches, get passed down from father to daughter or mother to son. Most epi-marks don't normally pass between generations and are essentially "erased," explaining why homosexuality appears to run in families, yet has no real genetic underpinning. Fascinating.

4. Flava in Your Ear, Part 1: Pedestrians who are tuned in to their iPods are prone to mishaps, a new study shows. The study, conducted in Seattle this past summer, may be the largest yet to look at real-world pedestrians in our age of distraction: It found that more than 26 percent of the 1,000-plus walkers were using electronic devices as they navigated intersections where pedestrians had been hit in the past. Texters were nearly four times less likely than other pedestrians to follow all safety rules, including looking both ways, staying in the crosswalk and obeying signals; and both texters and talkers took extra time to cross the street. Music-listeners walked faster, but often failed to look for cars, say researchers from the University of Washington and Seattle Children's Hospital, who reported findings Wednesday in the journal Injury Prevention.

5. Flava in Your Ear, Part II: A new study out of Britain suggests that your brain needs a break from your iPod – and your small screen gadgetry – if it's going to function properly.  Our increasingly sedentary lifestyle and vast use of iPods, tablet computers, televisions, smartphones, laptops and games consoles, has been linked to obesity problems and an increased risk of cardiovascular disease and Type 2 diabetes. So now what? Unplug, take a walk and think about how to get healthy, for starters.