Dr Spencer Wells

“99.99% of the people in the world today are agriculturalists”

“drained around 13,000 years ago”

“Younger Dryas (12,800-11,500 years ago)”

“the chance of success for an unrelated donor is only about 15%”

“the chances with a sibling (match) rise to about 85%”

“the chances of a match are 25%”

“a little over 21 years old in the 1970s in the US”

“It's over 25 years now in the US”

“It's nearly 30 in some countries in Europe, such as Switzerland”

“over 80% had serious mental disorders”

“probably going to stop around 9.2-9.5 billion”