Evolution is the way groups of life-forms change over time to better fit the places they live. It is why life takes "such endless forms most beautiful and wonderful," as British biologist Charles ...

"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 ...

Changes in Earth's orbit have helped pace climatic change for millennia. Scientists are now trying to understand whether - and how - these changes remodeled the landscapes our ancient ancestors ...