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!

Orcas are at the top of the food chain, but it is unprecedented that they would go after a great white shark. From the boat, whale watchers and experts alike are shocked by what they see.

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.

This video shows us that Shakespeare invented over 2000 new words and phrases, such as "eyeball," "anchovy," and "puppy."

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.

Created in 1611, The King James Bible permanently shaped the English language with new phrases that are still in use today. How many of them do you know?

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

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.

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.

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.

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

They can flow like a liquid and bounce back like a solid. Masses of fire ants show a duality that intrigues physicists.

Over the last two decades, the environmental crisis of Florida’s Lake Okeechobee has continued to worsen and dominate local headlines. The lake is the nation’s second largest freshwater lake, but due to years of missteps, it’s been producing massive amounts of toxic algae that have closed beaches, destroyed businesses and poisoned swimmers.