Photos of families around the world, sorted by income level

'We visited 264 families in 50 countries and collected 30,000 photos,' says Gapminder. 'We sorted the homes by income, from left to right.'

The poorest family is 12 people from Burkina Faso, with an income of $29/month. The richest family is a couple from France with an income of $14,753/month. — Read the rest