Trump slams lid on gain-of-function research

President Donald Trump 's executive order seeks to clamp down on risky research that modifies pathogens or toxins to enhance their ability to cause disease or spread more easily.

Peter Bergen : Order isn’t anti-science, as his critics claim; it’s anti-catastrophe.

He says it's a sensible step in his administration's crusade for sanity.

Bergen says new director of the National Institutes of Health understands this well.