Our universe started with the Big Bang, but how will it end? Explore cosmologists’ three possible scenarios: the Big Crunch, the Big Freeze and the Big Rip. -- We know about our universe’s past: the Big Bang theory predicts that all...

The Right Exercises for Your Abs

Howcast - Learn how to do crunches as part of the best post-baby workout from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn how to do a long arm weighted crunch from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do a crunch from certified personal trainer James Rizzo in this home ab workout video from Howcast.

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 side crunch on an exercise ball from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do super crunches with a medicine ball from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do a jackknife from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do a crunch / side bend combo from certified personal trainer James Rizzo in this home ab workout video from Howcast.

Howcast - Learn how to do the open and close it dance move from fitness expert Rachel Warren in this hip-hop dance workout video from Howcast.

Howcast - Learn how to do the lieutenant crunch for an ab workout from Michelle Seabreeze in this Howcast dance workout video.

Howcast - Learn how to do a water aerobics side ab workout from Dancing with the Stars performer Aubree Marchione in this Howcast water workout video.

Howcast - Learn how to do stomach crunches properly from certified personal trainer Max Tapper in this Howcast gym workout video.

Howcast - Learn how to do a great bosu ball workout for beginners from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do a crunch with a bosu ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to do ab crunches with a stability ball from personal trainer Rachel Shasha in this exercise ball workout video from Howcast.

Howcast - Learn how to make peanut butter and jelly fudge in this Howcast food video featuring pastry chef Katie Rosenhouse.

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

Howcast - Learn how to make tofu tacos with peanut salsa from Brooklyn Taco Co. chef/owner Jesse Kramer in this Howcast video.

Howcast - Learn how to make red salsa from Brooklyn Taco Co. chef/owner Jesse Kramer in this Howcast video.

Howcast -Your oblique muscles keep your body upright and cover the internal organs from your pelvis to your ribs. Keep in shape and perform oblique crunches.

Not every kitchen creation comes from a cookbook. Sometimes it's the story behind the recipe that makes it taste that much better! Learn the family secrets that make this unique cookie creation so special on this brand new episode...

Discover the craft and science behind making knack sausages, a favorite treat from Alsace. Learn about the traditional ingredients like pork, beef, and the surprising use of crushed ice to maintain the perfect texture during grinding....