Study: The human lifespan is written into our DNA

Humans have a "natural" lifespan of around 38 years, according to a new method we have developed for estimating the lifespans of different species by analyzing their DNA.

Link to stress, health of whales might be in giant mouths

Whale researchers in New England believe they've found a new way to measure the amount of stress felt by whales when they experience traumas such as entanglements in fishing gear, and they say the technique could help protect ...

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