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0answers
6 views

Comparative longitudinal data of smokers vs non-smoker - how and when do they die?

Is there any longitudinal comparative data tracking smokers and non-smokers showing how and when they die? Conversely, how many live to normal life-expectancy and are disease free?
0
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0answers
25 views

Can crocodiles live past 155 years of age?

I was at the Teluk Sangat Crocodile Farm ("Crocodile World") in Johor, Malaysia. There were a bunch of crocodiles that were claimed to be 60-80 years old (these were printed signs), one or two that ...
5
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2answers
95 views

Relationship between lifespan and reproductive age?

I remember reading a while ago that there is a "general rule" in biology between an animals lifespan and when they reach reproductive age. In other words, an organism that reaches sexual maturity ...
1
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0answers
69 views

Does reproduction cause aging ? Is aging just a strategy to increase reproductive success in all organisms? [closed]

Background for why I am asking this: I read a book—modern biological theory and experiments on celibacy— which uses life history theory to imply that reproduction is the reason why organisms grow old....
1
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1answer
91 views

How do we predict the lifespan of dinosaurs?

Of course, they are fossils now. I found a link here which states that herbivors lived far longer than carnivores. The example being a T-Rex being "old" at 29, and a herbivorous Bothriospondylus ...
11
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2answers
781 views

Is global life expectancy normally distributed?

I am trying to find out what the world distribution of life expectancy looks like.
1
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1answer
18 views

Where can I find a global life expectancy table?

I've found good information on specific countries and demographics, but I can't seem to find global numbers. I know that the world life expectancy is around 71.0, but I'm trying to get a percentile ...
7
votes
1answer
335 views

Why do skinny people live for shorter than the norm even though calorie restriction extends life expectancy?

If I understand correctly, calorie restriction may extend life expectancy slightly (not proven exactly how much for human). But according to the statistics, skinny healthy people have even shorter ...
3
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2answers
62 views

Would a person live longer, if such a person lived in a planet with lower gravity? (say, Mars) [closed]

I was wondering: some companies plan to colonize Mars, many of us know. But if one were to live on Mars, would this person live longer? It seems to me that a lower gravity would mean less overall ...
4
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2answers
955 views

Could we slow down life? [closed]

As far as I know there is no absolute time measurement (one that would measure time in a non-environment-dependent fashion) in any life form. Only such time measurements exist, which are dependent ...
0
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1answer
65 views

Would it be more genetically efficient to have shorter lifespans?

If, for example, humans had an average lifespan of, say, 30 years, and we reached sexual maturity at age 10, then we could "evolve" more quickly and theoretically "weed-out" more genetic diseases ...
-1
votes
1answer
196 views

How far can we go in engineering our own evolution? [closed]

After recently seeing Christopher Nolan's Interstellar and reading Kip Thorne's The Science of Interstellar, I've seriously been reflecting on the challenges mankind faces in becoming space pioneers, ...
2
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0answers
98 views

Does the metabolic rate determine how fast the telomeres shorten?

In many papers one can read that telomeres may play an important role in longevity. According to Calado et al.1 the telomeres of mice are much longer than the telomeres of humans. However, mice have ...
0
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1answer
68 views

Human longevity interventions ranked by effectiveness [closed]

Generally living longer and with a better quality of life is considered a good thing, if not for ourselves then for our family and friends who care about us. Some factors that influence human ...
7
votes
1answer
134 views

How was the cama's life expectancy computed?

A cama is a hybrid between a male dromedary camel and a female llama. The first cama was born on January 14, 1998, yet on the Wikipedia page it is said that a cama's life span is 30–40 years. How was ...
0
votes
1answer
49 views

Do trees have no set lifespan and “quite”immortal?

Many trees survive centuries and die only in disasters like storms and lightnings or infections. So do they have no set life span? Are they exceptionally resistant to genetic mutations and have very ...
0
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1answer
195 views

Organs lifespan out of the body [closed]

What organ can be conserved outside of the body for the longest time and still function when reimplanted?
-5
votes
1answer
370 views

How is it proved, that antediluvian people didn't live for hundreds of years? [closed]

Bible says that antediluvian people lived for 800-900 of years. Nowadays apologists say that it is possible and that we just can't know the truth. I know that one of the basic science principles is ...