The lowly krill averages only about two inches (5 centimeters) in length, but it represents a giant-sized link in the global food chain. These small, shrimp-like crustaceans are essentially the fuel that runs the engine of the Earth’s marine ecosystems.
In his 1945 Nobel lecture, Alexander Fleming warned that misusing penicillin could lead bacteria to become resistant, a prediction that has become a major global health problem.
The internet and the World Wide Web aren't the same thing. The internet is the global network of connected computers, while the web is a system of pages and links that runs on top of it.