From the UK Daily Mail. (H/T Mary)

Excerpt:

A pioneering British scientist who set up a controversial London fertility clinic with his wife in the 1940s may have fathered up to 600 children, according to research from two men who have discovered they are his biological sons.

Barry Stevens, a documentary film-maker from Canada, and David Gollancz, a London-based barrister, say that on the basis of recent DNA tests Dr. Bertold Wiesner made up to two-thirds of the clinic’s total sperm donations.

In 2007, DNA tests on 18 people who had been conceived at the clinic between 1943 and 1962 showed that 12 of the group — two-thirds — were Wiesner’s children, The (London) Sunday Times reported.

Using these results, Stevens and Gollancz believe that Wiesner, who died in 1972, must have fathered as many as 600 children.

“A conservative estimate is that he would have been making 20 donations a year,” Gollancz said.

“Using standard figures for the number of live births which result, including allowances for twins and miscarriages, I estimate that he is responsible for between 300 and 600 children.”

Imagine what would happen if a boy and a girl conceived by this nut decided to have children together. Sick.