Over the past two weeks, President Trump's executive actions have crowded just about everything else out of the news. But, despite widespread anxiety about the new administration's attitude toward science, research is still chugging along. And, last week, we got a great glimpse of true scientific skepticism at work. Two physicists from Harvard University published evidence that they had created metallic hydrogen . Of course, hydrogen is usually a gas. When chilled, it can become a liquid, such