Bruno Mars performs "24K Magic" in the Live Lounge for BBC Radio 1 and BBC Radio 1Xtra. Enjoy!

Although no one will ever be completely certain why it occurred, many things have been learned about both species from the attack.

Justin Bieber shows BBC Radio 1 how he spends his free time at home.

The star of the film Elf, Will Ferrell, returns to Billy on the Street for a very special holiday lightning round! Watch how New Yorkers react when Will and Billy demand holiday cheer!

How do sharks communicate? Particularly, how would the sharks around the Farallones all know exactly when to evacuate? Scientists who are working on "shark repellent" may have an explanation.

Canadian singer Michael Bublé talks about what it means to him to record the holiday classic "Have Yourself a Merry Little Christmas."

Santa has his hands full right now, so talk show host Jimmy Kimmel is helping him figure out which children belong on the naughty list by hooking them up to a fake lie detector.

First lady Michelle Obama met with Melania Trump at the White House on Thursday as both families prepare for the transition.

Here we see a simulation of how the attack happened, and find out what effect it had on the population of great white sharks around the Farallon Islands.

Enjoy the video for the song "Animal Instinct" from the Irish rock band The Cranberries.

To help prepare the First Lady for life after the White House, Ellen took her to CVS Pharmacy to pick up a few things.

Rosetta revisits the exciting scientific discoveries she has made during her time at Comet 67P/Churyumov-Gerasimenko, including the successful search to find Philae. Now it's time to start preparing to descend to the comet for the end of her extraordinary mission.

Voters in New York City talk about what they fear in a Trump presidency.

Sandra Bullock gives us the scoop on her new family friendly film "Minions" and gives her best Minion impression.

The male characters of the hit TV series How I Met Your Mother are constantly helping each other get into and out of situations. The book Bro on the Go contains the code of honor necessary for maintaining such friendships.