Howcast - Don't throw away your old tennis balls. Recycle them using these 7 helpful tips.

Howcast - Hitting a slow-pitched, high-arcing softball harder and farther takes hand-eye coordination, patience, and rhythm. Add power to your swing and hit farther home runs than you ever have before.

Howcast - Learn what kinds of big snakes make good pets in this Howcast video about pet snakes.

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

Howcast - Sometimes a simple walk can get old for your pooch. Playing games with your dog is the perfect way to get them the exercise they need.

Howcast - Spinning nunchucks, or nunchaku, are a traditional Japanese weapon that requires skill to master. Learn the basics with these tips.

Howcast - Learn how to win a bet that you can sink a pool ball without touching the ball directly in front of it with this Howcast video.

Howcast - Learn how to win a bet that someone can't make a really easy pool shot with this Howcast video.

Howcast - Learn how to win a bet that you can roll a pool ball under a pool stick without the ball touching the stick with this Howcast video.

Howcast - Instant or dry yeast causes dough to rise and leaven. If your dough isn't allowed to rise correctly, you can ruin your bread.

Howcast - Prep a baseball for play the way the pros do -- by getting it dirty.

Howcast - Learn how to make chocolate truffles in this Howcast food video featuring pastry chef Katie Rosenhouse.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a kick serve in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a flat serve in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to serve in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a backhand volley in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a forehand volley in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to volley in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a drop shot in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a lob in tennis in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit the ball on the rise in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a slice in tennis in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to improve your tennis backhand in this Howcast video.

Howcast - Let tennis pros Joe Perez and Kirk Moritz teach you how to hit a tennis ball with topspin in this Howcast video.