Jon Hamilton has been a science correspondent at NPR News since 1998. His current beats include neuroscience, environmental health risks, biomedicine, and extreme weather. Recent stories have looked at how blast waves from some military guns may damage the shooter's brain, evidence that Alzheimer's disease involves an ancient immune system in the brain, and the ethical questions faced by scientists growing "mini-brains" in the lab. In 2014, Hamilton was part of the NPR team that traveled to West Africa to report on a major Ebola outbreak.

Twitter: @NPRjonhamilton