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.

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.

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.

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.

This quirky ad from New Zealand Air employs characters from J. R. R. Tolkien's Middle-earth trilogy. Enjoy!

A British Gas video featuring Amanda Lamb with tops tips on preparing your home for the winter, including information on bleeding radiators, insulating pipes, and checking boiler pressure.

Dana: Six funny ways you know you're in the U.S. that I noticed while back over there this past January.

UNICEF Goodwill Ambassador Katy Perry delivers a special weather report on the devastating effects of climate change for the world’s children.

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains the process.

In this episode of SciShow Kids, Jessi talks about how solar eclipses occur, and why they can only be seen from certain locations.

Seattle artist Matt Sellars shows off the Clovis Point, a skateboard of his own design. Check out a few scenes from its construction and test drive!

David and Ben Crystal explain why Shakespeare verses read with Original Pronunciation convey very different emotions and open up another level of understanding.