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Russ Mitchell talks with Popular Science's Mark Jannot about the magazine's picks for the year's most ingenious inventions.

L'Oreal reveals that company scientists are developing a pill to prevent gray hair; Also, parents opposed to vaccinations turn to buying and selling lollipops licked by kids with chickenpox; And, scientists are trying to determine if exposure to traffic exhaust can damage your brain.

How much of what you think about food and eating is wrong? You might be surprised

Government report says intentional poisonings behind almost 15,000 emergency room visits annually

People who attended services frequently were 56 percent more likely to have positive outlook, study showed

New guidelines suggest screening before puberty, being more direct about child's weight

Dr.

Tough economic times mean states have less to spend on care for mentally ill

First-of-its-kind study finds increased mortality among older TIA sufferers

When chemical engineer Mark Davis' wife was diagnosed with cancer, he took his skills to develop a new and better treatment to fight her disease. Dr.

Cal Tech chemical engineer Mark Davis used nanotechnology as an alternative to chemotherapy in treating cancer

Preliminary tests involving rabbits show device can reliably gauge blood glucose levels by testing tears

Students and professors designed the specs for Aakash, the world's cheapest tablet. Then they handed over their work to a manufacturer. Now they're working on new versions and hope one day soon to have a greater role in how the tech they dream up actually turns out

Students and professors designed the specs for Aakash, the world's cheapest tablet. Then they handed over their work to a manufacturer

Experimental drug helped monkeys shed 11 percent of their body weight, 27 percent of their body fat, and reduced their BMIs and waistlines