Students, and much of the general public, have trouble understanding what makes a good scientific experiment, and changing that is a major goal of introductory science classes. But to learn, students must practice designing their own experiments, and get feedback on their designs. There are too few opportunities
In 1977, an outbreak of seasonal flu struck China and Russia. A epidemic of seasonal flu was, of course, no surprise. But the viral strain responsible was something of a shock. The strain was H1N1 influenza A, which had not been seen in the wild for two decades. 