In Germany, the obligation is not just to educate children but to send them to school: this is the 'Schulpflicht', compulsory school attendance, in force in all sixteen states. Home education is allowed only in exceptional cases, for instance for health reasons. Parents who challenged the rule have lost before the European Court of Human Rights, notably in 2019. Germany is one of the strictest countries in Europe on this point.
That's the estimate from a WHO-led study published in The Lancet in 2024, covering the half-century since the Expanded Programme on Immunization was launched in 1974. It works out to about six lives saved every minute, mostly infants. The measles vaccine alone accounts for around 60% of those lives.
According to the World Gold Council, about 216,000 tonnes of gold have been mined in all of human history. Because gold is so dense (19.3 tonnes per cubic metre), it would fit in a cube about 22 metres on each side, roughly the height of a seven-storey building. Strikingly, about two-thirds of it has been mined since 1950.