Long before chewing gum came in shiny foil wrappers with watermelon flavors and whitening promises, our ancestors were ...

The sudden rise of Oropouche disease startled scientists and health officials. Since its discovery, there have only been around 500,000 known cases. By contrast, there are upwards of 400 million ...

In the shadows of Python Cave, Uganda, a leopard leaps from a guano mound—formed by bat excrement—and sinks its teeth into a ...

Purdue University researchers now have developed an innovative, paper-based diagnostic test for rapidly detecting avian ...

Deadly viruses throughout history From the Ebola to COVID-19, diseases caused by viruses have killed humans throughout history. Viruses are much older than human beings, possibly even older than ...

Box 1. Influenza A viruses. Influenza A virus particles (virions) have a typical diameter of 80–160 nm, and are pleomorphic in shape. Virions consist of a lipid envelope (derived from the host ...