Gun violence works as a social contagion, say experts explaining a rise in violent crime across many U.S. cities.
Aging could happen at once, rather than over time -- and it may be possible to block the signal to begin the aging process.
Sugar-sweetened beverages contribute to death, obesity and heart disease.
In the movie Self/Less, an older man tries to stay young by uploading his consciousness to a younger body. Can technology prevent humans from aging?
A teenager in Italy recently beat some incredible odds when he survived for 42 minutes underwater - how'd he do it?
Known for his soaring guitar licks and as an inspiration for generations of musicians, the blues legend died at age 89.
A passenger train derailed and overturned in Philadelphia, killing at least seven people and leaving a horrific scene of mangled metal and broken glass.
PTSD, a psychological disorder, is linked for the first time with long-term, systemic effects on a basic process such as aging.
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