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 ...

"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 ...

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.