Aging is a perfectly natural process, but that doesn’t mean that humans won’t try everything in their power to slow it down. In recent years, researchers who study aging have become intrigued by the idea of slowing the march of time by ridding the body of its population of older cells.
A gaunt, 92-year-old man in a wheelchair sunbathes in a narrow courtyard, motionless, his eyes closed. Nearby, a few dozen other elderly men with short grey hair exercise slowly as an instructor gently calls out, "Don't strain yourselves."
Naked mole rats are incredibly resistant to certain types of pain, have a high immunity to cancer and can survive 18 minutes without oxygen but they may also hold the key to never aging, new research suggested.
While rapid population growth may be the defining feature of the 20th century, with world population nearly quadrupling from 1.6 to 6.1 billion, the hallmark of the 21st century is likely to be population aging.