When a massive swell hit Pe'ahi on the north shore of Maui, Kai Lenny relied on all his prior experience in water sports to take on the challenge: the biggest waves he had ever surfed.

Luke Hamlet owns a surf shop in Long Island and provides an insight to surfing. He also talks about the different kinds of boards and the equipment which he has available in his shop.

Luke Hamlet continues his informative discussion regarding his Long Island surf shop. He invites us to visit him, if we’re ever in his “neck of the woods.”

We all know that whales are endangered due to hunting and pollution, but do you know how important they are for the ocean and the environment? This video shows how essential a healthy population of whales is to the ocean ecosystem. Creative Commons Attribution license (reuse allowed). Video was not modified. Please visit sustainablehuman.org for credits and more information.

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.

The story told in this animation reminds us that we can never predict the exact outcome of things that happen in our lives. Please visit sustainablehuman.org for credits and more information.

Two swimsuit models discuss the ins and outs of trading off their good looks and their probably unrealistic plans for the future after their assets have gone pear-shaped.

Marc Bolan from T. Rex on Top of the Pops in 1971. One of the legends of the UK glam rock era of the early 70’s.

This campaign by the Australian Transport Accident Commission is a wake-up call for everyone and warns about the consequences of drunk driving.

For this song, 1980s English pop band Talk Talk were inspired by the book The Dice Man by Luke Rhineheart, in which the main character rolls dice to determine his daily actions. As Talk Talk’s singer songwriter Mark Hollis once quipped, “A good book, but not a lifestyle I’d recommend.”

Barbara is a retired French teacher who happens to be Sigrid's sister. The two have a conversation about language in general and about how Barbara became interested in the career path she followed.

Barbara talks about her studies and other experiences that led to her career as a French teacher. Immersion played a crucial role for both sisters in learning new languages.

Barbara talks about the different jobs she had teaching both French and English. Later, she also had a job supervising teachers of foreign languages, though she notes that these are now referred to as "world languages."

Barbara talks about a mistake she made as a language supervisor. Sigrid talks about how people in the U.S. speak English even when they have a very strong accent and it's OK. They both agree that learning with a native speaker of the language is the best way to learn.

Both Sigrid and Barbara like grammar and they talk about some of their pet peeves. The also agree that grammar isn't the most important thing. Using the language to communicate is more important.