* Over 8 billion people live on Earth today, with the next billion coming fast * Fertility rates are declining in 60+ countries, while Africa drives future growth * Urbanization, //aging, and climate ...

What if the challenge for humanity’s future is not too many people on a crowded planet, but too few people to sustain the ...

Ancient humans in Africa changed their behaviour in a major way 70,000 years ago, which could explain how their descendants ...