Why do giraffes have long necks? Answers to 25 animal evolution questions | Evolution is driven by interactions between genetics and nature, and the Earth’s rock layers preserve a record of this ...

"Intelligent design theory" is built on the belief that evolution does not sufficiently explain the complexity that exists in life on Earth and that science should recognize the existence of an ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American More than a century and a half after Charles ...

Click on a microbe clock to see a microscopic view of how Streptococcus pneumoniae replicate over the course of one minute and learn facts about the battle between microbes and modern medicine.

About a billion years after the Earth formed, the first signs of life emerged. These were just single-celled microbes, but through billions of years of evolution, scientists think that one of these ...