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Researchers in Massachusetts have developed a prosthetic ankle that works more like the real thing than ever before. As Wyatt Andrews found out, many amputees see the limbs as so functional, they stop seeing themselves as impaired.

The National Institute of Health has begun hosting a two-day summit on the fight against Alzheimer's disease. Wyatt Andrews reports a group of researchers in one study are facing an unexpected hurdle

The government reported a new case of mad cow disease discovered in California - the first in the U.S. in six years. Wyatt Andrews reports on the findings and the threat to public health

CBS News correspondent Wyatt Andrews reports on the decision of Health and Human Services Secretary Kathleen Sibelius to restrict the sale of the morning after pill, Plan B - against the recommendation of the FDA that the drug be sold over-the-counter.

In a surprise decision by the Obama administration, young teenagers will not be allowed access to Plan B, the morning-after emergency contraception pill, without a prescription. Wyatt Andrews reports on what's behind the controversial move.

In the search to help patients with Progeria, a disorder that causes accelerated aging, scientists have uncovered what makes us age over time. Will this open the door for true anti-aging treatments? Wyatt Andrews reports

A new Duke University study finds that flame retardant chemicals found in baby products such as car seats and diaper changing pads may contain harmful toxins. Wyatt Andrews reports.

After a private company gained exclusive rights of a progesterone drug used to prevent premature births in at-risk mothers, the price of the shot spiked from $30 to $1,500. Wyatt Andrews reports