Evolution: Pulling doubled lifespan out of a hat

Part III of III in a series on the evolution of aging. (Part I, Part II) Part IPart II If all you had to go on was our genomes, you’d surely conclude that humans and rodents were nearly the same animal, with roughly 92% overlap. And luckily for the species that does science, the other…

Evolution eats the old to feed the young

Part II of III in a series on the evolution of aging. (Part I, Part III) Sex and death have been friends for a long time. Many people would tell you that death–or rather, aging–wasn’t around until we started reproducing sexually, and if you examine the tree of life you’ll see a lot of evidence

The evolution of one of Earth’s longest-living mammals

Here’s an interesting experiment that I don’t recommend trying at home. Take a strain of mice, and choose what age you’d like them to live to. The average lifespan for mice in captivity is around two years, so let’s say you give them six months. Kill the first generation after six months, and do that…

How your ancestors’ lifestyle determines your lifespan

Here’s an interesting experiment that I don’t recommend trying at home. Take a strain of mice, and choose what age you’d like them to live to. The average lifespan for mice in captivity is around two years, so let’s say you give them six months. Kill the first generation after six months, and do that…

Research roundup: Scars into hearts, and more

We can reprogram existing scar tissue into healthy organ tissue, but we didn’t know what was actually going on inside these newly revitalized cells until now. You know those articles blowing up in the popular press about how countering aging is “mathematically impossible”? Don’t get all excited–it’s just a new evolutionary theory of why aging…

Research roundup: Ancient worms of the deep sea provide clues to the evolution of long lifespans, and more

Lessons from 300 year old tubeworms: Lessons The low 0.67% mortality rate … supports longevity theory, which states that in the absence of extrinsic mortality threats, natural selection will select for individuals that senesce slower and reproduce continually into their old age. The low 0.67% mortality rate … supports longevity theory, which states that in…

In the media this week: Sentries, strawberries, and senolytics

Will strawberries be the next superfood? The Life Extension Advocacy Foundation takes a look at a naturally occurring senolytic that delayed accelerated aging in a mouse model of Alzheimer’s. naturally occurring senolytic New Scientist reports that England’s rising life expectancy hit a wall in 2010, and evidence from a Tanzanian tribe suggests that elderly people’s…

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