Questions tagged [population]

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Were all but one of the US presidents descended from King John of England?

The Daily Mail says: A 12-year-old girl created family tree linking 42 of 43 U.S. presidents to King John of England, who signed the Magna Carta in 1215. Only the eighth president, Martin Van ...
8
votes
0answers
311 views

Does the availability of modern contraception only explain 10% of human fertility reduction?

It is widely assumed that the most important factor leading to large family sizes and fast population growth is the lack of availability of contraception. But Tim Worstall's book Chasing Rainbows ...
3
votes
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243 views

What is the impact on climate change of having a child?

I found one study from 2017 that says (emphasis mine): We recommend four widely applicable high-impact (i.e. low emissions) actions with the potential to contribute to systemic change and ...
1
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136 views

Do humans, pets and livestock drastically outweigh all other land mammals?

Does this picture demonstrate the actual proportions well (from xkcd)?