Richard Wiseman gives up some pretty funny party tricks, but best try these only on friends, a stranger in a bar may not be in the mood to get the joke!

Enjoy yet another great collection of bar gags from Quirkology.

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

Learn about the states of matter, solids, liquids and gases, how they're different and where they're found in everyday life.

Merve feels lucky to live in Kamloops, a small city in southwest Canada, and you can see why! It’s a beautiful place, surrounded by wilderness on all sides. Merve tells us about the area's mountains, grasslands, rivers and lakes, the gold rush of the late 19th century, and its wealth of fascinating wildlife.

Merve lives in British Columbia, Canada's westernmost province, where it gets extremely cold in the winter. He and his friend still go fishing, however, by drilling a hole through 10 inches of ice!

We meet a young woman, Caralie, on the street. She takes us to her apartment building. She checks her mail-box. She invites us inside and up the stairs to her third-floor apartment.

Caralie takes us into her kitchen. Here she talks about fruits, vegetables and preparing soup. She also shows us some important appliances in her kitchen.

The trolley problem is a classic thought experiment in moral philosophy. Is sacrificing one life to save the lives of many others the best possible outcome?

Study a foreign language with Yabla.

Sigrid gives a quick explanation of what Yabla is and how the Yabla player works.

Are you tired of the usual methods? With Yabla, you can learn a new language through authentic videos that range from music to news to lessons. You can try the unique Yabla video player for free at yabla.com.

The Pogues' alternative Christmas song is not about snowflakes, mistletoe or angels, but broken promises and ruined dreams, as well as time spent in the drunk tank. There have always been lots of policemen in New York City with Irish ancestry, hence the connection with the NYPD (New York Police Department).

MySpace Celebrity Duffy talks among others about her debut album “Rockferry” which entered the UK Album Chart at number one. She also won a Grammy Award in the category of Best Pop Vocal Album.

This is Amie Ann Duffy, the Welsh singer-songwriter known as Duffy, performing her signature song "Mercy" from her debut album Rockferry. It was released in 2008 and achieved worldwide chart success.