Surgery

Spinning silk into next-generation eye and knee implants

For thousands of years, silk has been treasured for its qualities as a beautiful material for elegant garments. But scientists are harnessing the less obvious qualities of silk to develop versatile replacement parts for human ...

Health

New stem-cell treatment: 'Hype is ahead of the science'

Before New York Yankees pitcher Bartolo Colon pulled his hamstring while running from the mound to first base on June 11, fans would have been forgiven for thinking he had chugged from the Fountain of Youth.

Health

Researchers find that brains with more vitamin D function better

An estimated 55 million people worldwide live with dementia, a number that's expected to rise as the global population ages. To find treatments that can slow or stop the disease, scientists need to better understand the factors ...

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