"How wonderful that we have met with a paradox. Now we have some hope of making progress."
~ NEILS BOHR
Fact of the day
As Swedish statistician Hans Rosling first noted, the world recently reached "peak child" – the point where the number of children aged 0 to 14 around the globe levels off. Global fertility rates have halved in 40 years – they are now below 2.5 children per woman – and global population may peak soon.