by msander | Jul 24, 2018 | All Science Teachers
Fewer children in the United States are getting vaccinated. That’s bad news for those kids, and also for public health in general. Often, the response is to argue and debate and get angry at people who are we see as making terrible, irrational decisions. Instead of...
by msander | Nov 30, 2017 | Gr. 11-12 Biology
All year long, researchers at hospitals around the world collect samples from flu patients and send them to top virology experts with one goal: to design the vaccine for the next flu season. But why do we need a new one every year? Vaccines for diseases like mumps and...
by msander | Oct 5, 2017 | Gr 9-10 Science, Gr. 11-12 Biology
It’s a common misconception that stomach ulcers are caused by emotional upset, psychological distress, or spicy food. Yet no convincing study has ever demonstrated that these factors directly cause ulcer disease. So what does cause stomach ulcers? Rusha Modi explains...
by msander | Mar 6, 2017 | Gr. 11-12 Biology
For several centuries, people though diseases were caused by wandering clouds of poisonous vapor. We now know that this theory is pretty ridiculous, and that diseases are caused by specific bacteria. But how did we get to this new idea of germ theory? Tien Nguyen...
by msander | Feb 23, 2017 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
For most of human history, we had a lot of bad ideas about how we were getting sick: angry gods, misaligned planets, stinky fumes. We also had plenty of bad ideas about how to prevent it, like bloodletting, large holes in the head and drinking arsenic. Things started...
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