Parallel universes collide in this gripping, sci-fi thriller when four young scientists conducting experiments in quantum entanglement discover messing with the spacetime continuum is not without consequences. As seemingly exact replicas of themselves begin to appear, a violent chain reaction is set in motion that threatens their very existence and the balance of the universe.

Ripley is back! A team of scientists bring her back through cloning and are anxious to get their hands on the alien embryo that invaded her. Bonus features included.

The nutty professor: Lovable Sherman Klump thought he had seen the last of his alter-ego, but Buddy Love is back, and trying to make it on his own. The nutty professor II, the Klumps: To improve his social life, a nerdish professor drinks a potion that temporarily turns him into the handsome, but obnoxious, Buddy Love.

Bill Nye shows us how these feathered friends stay airborne, where they live, and what they eat.

Two siblings, Sophie and David, discover and release three amazing creatures from special science jars hand made by famous naturalist Albert Derwent.

What's cooler than science and learning? Find out more about how important science is in the world as well as how fun and interesting science experiments can be!

Bill Nye studies the body's window to the world--the eyeball.

You may not believe it, but these 'spineless wonders' far outnumber those of us animals with backbones. In 'Invertebrates, ' Bill Nye explains the unique characteristics of these animals and why we are dependent on them--Container cover insert.

In Simple Machines, Bill careens around on a roller coaster and furiously pedals his bike on the Tour de Science to show that simple machines doing complicated things can be found everywhere.

Rosa and her friends return for more fun, conducting basic experiments involving science, technology, engineering and number skills!