It's an old cliche: an opera singer hits a note so high, it breaks a wine glass. It may seem over the top, but with a little science (and an amp), you too can break a glass like the finest soprano!

Paul Andersen introduces the concept of ethology and contrasts kinesis and taxis. He explains the importance of courtship rituals in fruit flies. He finally shows you how to use a choice chamber to study behavior in pill bugs.

It's spring where Jessi and Squeaks lives, and that means the air is filled with the sounds of birds singing! But have you ever wondered why birds sing and who they're signing to?

New ReviewRikki faces Nagaina for the final time to save Teddy, his family and the garden from the evil cobras.

In this video Dr Claire Kennan explores how, without a police force, law and order was maintained in Anglo-Saxon England.

Howcast - Learn how to correct nasality from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to sing on pitch from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to use a microphone from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to create a signature style and find your niche from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to sing like Chris Martin from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to warm up your voice by singing vowels from vocal coach Cari Cole in the second video of a four-part Howcast series.

Howcast - Learn how to sing the U.S. National Anthem "The Star-Spangled Banner" from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to avoid the most common singing mistakes from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to become a singer from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to find a good pop vocal coach from vocal coach Cari Cole in this Howcast singing tutorial.

Howcast - Learn how to play a pattern one blues scale on the bass guitar from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn about Paul Sandberg, one of Howcast's piano experts, in this video.

Howcast - Learn how to beatbox while singing in this Howcast video with Beatboxer Entertainment.

Howcast - Learn about fashion designer Coco Chanel in this Howcast fashion video with expert Nancy Deihl.

Howcast - Learn how to create a stimulating environment for an infant from parenting coach Tammy Gold in this Howcast baby care video.

Howcast - Learn if alphabet songs are a good way to teach children their ABCs from reading specialist Anne Glass in this Howcast video.

Howcast - Learn about the role of the flamenco guitar in flamenco music in this Howcast video.

Howcast - Learn how to play sevillanas compas in this flamenco guitar lesson video from Howcast.

Howcast - Learn how to get a modeling agent from model scout Trudi Tapscott in this Howcast video.