So last year, Ms Harrington, Ms Prinzivalli and a transgender man who was designated female at birth sued the city.

BBC: Transgender Americans take on New York

In February, Thabo Mbeki, South Africa's president, opened parliament with the stones at his side, and said he was delighted to have proof that Africa gave birth to modern man.

ECONOMIST: A cave in South Africa may rewrite human history

Lee Kuan Yew, Singapore's senior minister, is accepted even in China as a great Confucianist: he spoke at a big conference in China in 1994 to celebrate the 2, 545th anniversary of the great man's birth.

ECONOMIST: The sage, 2,549 years on