Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.

One Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in one minute!

Paul Andersen explains the major procedures in molecular biology. He starts with a brief description of Taq polymerase extracted from the hot pools of Yellowstone Park. He then uses the analogy of the ransom note to explain each of the...

Our new evolution simulator reveals that extinction often happens when conditions change quickly.

Explore the steps of DNA replication, the enzymes involved, and the difference between the leading and lagging strand! This video is an update from our old DNA replication video with nearly the same script but added detail and improved...

Join The Amoeba Sisters as they explain the biotechnology PCR. This video goes into the basics of how PCR works as well as two examples of its potential use. Table of Contents: 00:00 Intro 1:34 How does PCR work? 4:31 Why use PCR? 5:10...

Howcast - Tired of looking like you’re embarrassed—or worse, drunk—24/7? Here are some easy ways to make your cheeks less rosy.

Howcast - Bring realism to your fantasy miniatures, which will spring to life under your skillful hand.

Howcast - Let professional makeup artist Patricia Longo teach you how to prep your eyes for makeup in this eye makeup tutorial from Howcast.

Howcast - Let professional makeup artist Patricia Longo teach you how to use foundation primer in this makeup tutorial from Howcast.

Howcast - Let professional makeup artist Patricia Longo teach you how to apply tinted moisturizer in this makeup tutorial from Howcast.

Howcast - Learn how to do your face makeup for an Emo look in this Howcast makeup tutorial with expert Patricia Longo.

Howcast - Learn how to do face makeup for a pinup look in this Howcast makeup tutorial with expert Patricia Longo.

Howcast - Learn how to do chola face makeup in this Howcast makeup tutorial with expert Patricia Longo.

Howcast - Learn how to custom paint your skateboard from SHUT Skateboards' Michael A. Cohen in this custom skateboard Howcast video, part two of three.

Howcast - Learn how to apply eye shadow for black women from professional makeup artist Nicole Williams in this Howcast makeup tutorial.

Howcast - Learn five skin care and makeup primer tips from celebrity makeup artist Raychel Wade in this Howcast Asian makeup tutorial.

Howcast - Learn how to use eye primer from celebrity makeup artist Raychel Wade in this Howcast Asian makeup tutorial.

Howcast - Learn how to apply primer in this makeup tutorial from Howcast.

Howcast - Learn five beach makeup tips from makeup artist Brittney Rose in this Howcast makeup tutorial.

Howcast - Learn how to fix wood molding before painting from Brushed Interiors founder David Sartori in this Howcast video.

Howcast - Learn how to make large plaster repairs and how to skim coat from Brushed Interiors founder David Sartori in this Howcast video.

Howcast - Learn if you need to apply a coat of primer before painting from Brushed Interiors founder David Sartori in this Howcast video.

Howcast - Learn how to calculate how much paint you need to buy with this Howcast video featuring Brushed Interiors founder David Sartori.