Imagine blowing out candles on your 100th birthday cake—only to realize you’d still be a teenager if you were a Greenland shark. Living in an era where life expectancy is on the rise, we often think ...

WASHINGTON -- More than a dozen animals live longer than we do. A new study estimates that at least one Greenland shark lived about 392 years, making it the longest-living animal with a backbone. Here ...

Aging brings about a range of changes—often unwelcome—to our bodies: sagging skin, graying or thinning hair, and a decline in muscle strength and vitality. But aging also affects us on the inside, ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...