The so-called "blood-brain barrier" stops lots of bad stuff from reaching our brain, but it can also keep out potentially life-saving medicines.

It sounds like an action figure?s super power. But new research suggests we all have it?the ability to hear silent shapes.

Before you use one of those antibacterial soaps to wash the dishes, you may want to check your water chemistry.

Are crossword puzzles just not challenging enough for you? A new e-business has plenty of brain teasers, and solving one might earn you as much as a hundred grand.

As last year?s Indian Ocean tsunami demonstrated all too well, waves contain tremendous energy. Some engineers think we should tap it.

Eggs are inspiring more than Easter decorations this week. A couple of engineers in England say their egg design might help save lives in world trouble spots.

Use of performance enhancing drugs is becoming an increasingly high-tech shell game between cheating athletes and testers.

It was an age-old mystery, solved last Saint Patrick?s Day. Bubbles in a Guinness beer actually do float down. The phenomenon, though, is more than a curiosity.

It sounds like a gross-out stunt from "Fear Factor." But putting these bugs in your mouth might just end tooth decay.

This week we?ve been hearing lots about scary viruses, like the Avian Flu. But one researcher says some viruses might actually help us?with tiny construction projects.