HS-LS4-2

Looking at a wolf and a German shepherd, it is easy to think: "Sure, related." But what about a wolf and a Pekinese? Have you ever seen those dogs? They look like adorable walking footstools! [...]

Picture it: A giant (like, seriously giant) tray full of bacteria. Billions and billions of bacteria just growing and spreading. A germaphobe's worst nightmare? Nah. These bacteria (like most [...]

Researchers have been tracking E.coli through 60,000 generations to answer a fundamental question: How does natural selection work in a constant, stable environment?

Think that evolution always results in disadvantageous traits becoming less common in a population? Think again.