Exploring Nature: Pathogens
When I think of dangerous animals and life-threatening diseases, I tend to consider lions, tigers and sharks for the animals and cancer for the disease. In truth, it’s not big animals we need to fear most, it’s tiny ones, like ticks, fleas and mosquitoes. And various plagues down through the ages have killed more people than any other single cause. Back in 165 A. D., soldiers returning to Europe from the Near East carried a virus causing smallpox. It ravaged a generation and killed five million people. In 542, bubonic plague, carried by fleas on rats, killed about 20 million people in Asia, North Africa, Arabia and Europe.
12/26/2021 04:00 AM