Why would a killer whale go after a great white shark? Enter Alisa Schulman-Janiger, a biologist who is very familiar with the different families of killer whales off the coast of California.

So if an orca attacking a shark is so rare, how do they usually behave? In this segment, we learn about how orcas around the world live and hunt.

Some orcas do prey on sharks, but how do they do it? Researchers also have to catch sharks occasionally, and there is a particular technique that they use.

The phenomenon of tonic immobility helps researchers study sharks, but does it also help orcas hunt and kill them?

NASA has announced the results of an epic physics experiment which confirms the reality of a space-time vortex around our planet.

This clip about kiteboarding reveals what makes this sport so attractive and what everyone really longs to achieve in it. Video provided by Naish Kites

Kite boarding is a sport with many facets. Enjoy some of them with these fun pictures of the Naish Summer Kite Race Series on the beautiful island of Maui. Video provided by Naish Kites

Enjoy this documentation entitled “California Trippin’” about kiteboarding by Naish Kiteboarding.

More kiteboarding, this time off the coast of England. Enjoy some great footage! By Naish Kiteboarding.

Have you looked in all the corners of your hometown and explored every single possibile kite spot? Follow along with Davey Blair from Naish Kiteboarding as he scours Charleston, SC, his home town, for new kiting terrain. Nowhere is safe: from the Battery to Ravenel Bridge, it’s amazing what you can find in Chucktown. Check it out, y’all!

Professional kiteboarder Davey Blair from Charleston “Chucktown” shows off his kiting skills as he and his friends do a special show on Lake Marion for kids suffering from cancer. By Naish Kiteboarding.

Naish Kiteboarding: 19-year old Kai Lenny takes all his toys down to JAWS as the conditions become epic. Dropping into a 25 foot+ wave is crazy enough, now add in trying to paddle into one of these beasts, that's a whole different story!

FBI agents (Bruce Willis and Radha Mitchell) investigate the mysterious murder of a college student linked to the man who helped create a high-tech surrogate phenomenon that allows people to purchase unflawed robotic versions of themselves. The murder spawns a quest for answers: in a world of masks, who is real and who can you trust?

This is the trailer for the hilarious 2005 film adaptation of the novel The Hitchhiker’s Guide to the Galaxy. Enjoy!

Determined to make her young, blonde, and beautiful daughter a vaudeville star, a willful, domineering stage mother will stop at nothing to achieve her goal. She drags the girl and her shy, awkward, and less-talented older sister around the country in an effort to get them noticed.