Great visualization: if the world lived in a single city, how big would it be (for various city densities)

Think again, suggests Nattavudh Powdthavee – you’re experiencing a focusing illusion

Parenthood ain't all it's cracked up to be, finds Oliver Burkeman

The bottom line is that absolutely nothing else you can do—driving a more fuel efficient car, driving less, installing energy-efficient windows, replacing lightbulbs, replacing refrigerators, recycling—comes even close to simply not having that child. All those good things still add up to less than 500 metric tons of CO2 savings. Not having the kid saves between 10,000 and 13,000 metric tons of CO2.