![](https://assets.weforum.org/article/image/GCo_cR_byucpebrG2b-iV99laTGHQWxByNZN8dGpP_k.jpg)
Industries in Depth
The unexpected factor holding back research and innovation
Visa rules could be holding back innovation and research by keeping scientists at home - preventing collaboration.
John W Wilson is a Postdoctoral Research Fellow in Conservation Biology, University of Pretoria