Howcast - Learn how to attack an assailant's knee in this self-defense video from Howcast.

Howcast - Learn how to use your legs and feet to defend yourself against an attacker in this self-defense video from Howcast.

Howcast - Learn how to do a shin kick in this self-defense video from Howcast.

Howcast - Learn how to attack with your knees in this self-defense video from Howcast.

Howcast - Learn how to attack with your elbows in this self-defense video from Howcast.

Howcast - Learn how to swim faster in this swimming lesson from Howcast.

Howcast - Learn how to teach your parrot to fly from Parrot Wizard Michael Sazhin in this Howcast video.

Howcast - Learn how to train your parrot to step up from Parrot Wizard Michael Sazhin in this Howcast video.

Howcast - Learn what plyometrics is and how it can improve your sprinting from sprinting coach Shane Paul Neil in this Howcast video.

Howcast - Learn how to ride defensively from professional motorcycle instructor Joonil Park in this Howcast video.

Howcast - Learn how to teach your puppy to stay from dog trainer Robert Haussmann of Dogboy, Inc. in this dog training video from Howcast.

Howcast - Learn how to shoot a basketball farther from former top-ranking college basketball player Jason Curry in this Howcast video.

Howcast - Learn how to shoot a soccer ball from Coach Frank Hauser in this Howcast soccer video.

Howcast - Learn how to do a 360 no comply wall plant from competitive skateboarder Nate Cohen in this Howcast skateboarding video.

Howcast - Home Run Derby is a classic game that can be played in many different locations with all kinds of different objects. Here are some basic rules and tips.

Howcast - Babies who wake up frequently after their first few months can put a strain on an entire family. Use these night-weaning techniques to get some rest.

Howcast -The Appalachian Trail is the premier long distance hiking route on the East Coast. Enjoy its unique opportunities to connect with nature with a solid hiking plan.

Howcast -Learn how to use astrology to determine the best time to travel or take a vacation from famed astrologer Jenny Lynch in this Howcast video.

So you've won the chance to sink a half-court basket for a prize. Congratulations! Now here's what you've got to do to win.

You can learn to confidently and accurately sew a straight seam.

Understanding how velocity is calculated is essential if you are to grasp the laws of physics. Learn the calculations necessary to figure it out.

Her birth is significant due to the southern white rhino's endangered status.

It's the 94th southern white rhino born at the San Diego Zoo since 1972, and mom Casey's second baby.

This is the 94th birth of a southern white rhino born at the San Diego Zoo Safari Park, which is significant due to their endangered status.