The southward advance of native African farmers with Central African crops halted in Natal, beyond which Central African crops couldn't grow - with enormous consequences for the recent history of South Africa.

Why is it that you white people developed so much cargo and brought it to New Guinea, but we black people had little cargo of our own?

With the rise of chiefdoms around 7,500 years ago, people had to learn, for the first time in history, how to encounter strangers regularly without attempting to kill them.

The survival rate of Dr Burton's patients approximately doubled the maximum survival rate of conventionally treated patients. Had these findings pertained to a chemotherapy drug instead of IAT, massive amounts of funding would have been allocated to investigate the drug. Once again, the politics of cancer barred a potentially valuable treatment from reaching the public.

The King's 28 letters have been described by scholars as the world's best alphabet and the most scientific system of writing.

I'd rather spend my leisure time doing what some people call my work and I call my fun.

One person making a wrong decision affects the whole country.