Paul Andersen explains how natural selection is a major mechanism in evolution. The video begins with a discussion of Charles Darwin and the details of natural selection. The data of the peppered moth during the industrial revolution...

We’re continuing our exploration of conflict theories with W.E.B. Dubois, who is one of the founders of sociological thought more broadly and the founder of race-conflict theory. We’ll discuss shifting ideas about race, Dubois’ idea of...

In this video Paul Andersen explains how the resistivity of a material opposes the flow of charge. Conductors (like metal) will have a low resistivity and insulators will have a high resistivity. Semiconductors will have a moderate...

New ReviewMeteorologist explains how global warming has intensified Hurricane MelissaAP

The impact of antibiotics on human health cannot be overstated. They are a big deal. And thanks to evolution, more and more bacteria are becoming resistant to antibiotics. Is there anything we can do? Yes. Let's talk about it.

Caecilians are legless amphibians. Some of them are immune to cobra venom and in a certain sense, some of them eat their mothers from the inside-out and some eat them from the outside-in.

2 minute video describing voltage, current and resistance for middle school science

Add weight to your bicep curls with some dumbbells

Howcast - Learn about Pokemon weakness and resistance from the Pokemon Trading Card Game pros at Comic Cafe in this Howcast video.

Howcast - Learn how to attack from the Pokemon Trading Card Game pros at Comic Cafe in this Howcast video.

Howcast - Learn about spinning during pregnancy from fitness expert Cait Morth in this Howcast workout video.

Howcast - Learn some six-pack shortcuts from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do a decline cable fly from certified personal trainer Max Tapper in this home chest workout for men video from Howcast.

Howcast - Learn how to do a cable chest press from certified personal trainer Max Tapper in this home chest workout for men video from Howcast.

Howcast - Check out this walkthrough for the third person action shooter "Warhammer 40K Space Marine" and beat Chapter 4 with this online demo.

Howcast - Learn how to do resistance band exercises from certified personal trainer Max Tapper in this Howcast gym workout video.

Howcast - Get to the rendezvous point through the slums in Binary Domain, the squad-based third-person shooter from Yakuza Studio.

Howcast - Learn how to demonstrate mass, shape, and air resistance for a science project with the instructions in this Howcast video.

Howcast -If you've grown weary of that boring water workout, this guide will up the intensity with a routine that incorporates all the benefits of pilates in the pool.

Howcast -Learn the meanings of the Suit of Swords tarot cards from expert Ellen Goldberg, M.A. in this Howcast video.

Avoid sore knees and achy feet by moving your exercise routine from land to water.

The amount of power drawn by a household appliance is given in watts. Here's how to calculate wattage.

Welcome back to the Fluctus Channel for a fascinating dive into the world of testing of mighty warships and submarines. Fluctus is a website and YouTube channel dedicated to sea geeks. Whenever you are curious or an incorrigible lover of...

Erica Chenoweth, a political scientist at Harvard University, explains that civil resistance is a nonviolent strategy where ordinary people coordinate to demand and protect democracy. Successful movements typically rely on four key...