Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Restraints on intellectual traffic between South Africa and the rest of the world have grown over the past year. The academic community should find a better way of making its good intentions come true.
Nobody approves of apartheid in South Africa, but continuing efforts by the rest of the world to ostracize South African science create as many problems as they may yet solve.