Fears that US clampdown on student visas will hamstring nation’s research

Chemistry Nobel prize winner Fraser Stoddart says he’d think about leaving the US for China in a few years’ time if the Trump administration continues to block the flow of bright young minds into the country. Stoddart, who is 78 and runs a research group of 35 at Northwestern University, was reacting to Trump’s new executive order which extends new limits on entry visas for highly skilled workers. It is up to the scientific community to speak out, he says, as science – and education – are at risk.