Hundreds of millions of years ago, the first animals to crawl onto land were strict meat-eaters, even as plants had already taken over the landscape. Now scientists have uncovered a ...

Animals, from worms and sponges to jellyfish and whales, contain anywhere from a few thousand to tens of trillions of nearly genetically identical cells. Depending on the organism, these cells arrange ...

Evolution is often perceived as an incredibly slow, natural process driven by environmental pressures over millennia. That characterization certainly holds true, but humans have also repeatedly ...

Introduction : celebrating and understanding reproductive diversity / Janet L. Leonard -- The distinction between primary and secondary sexual characters / Michael T. Ghiselin -- The evolution of ...

Scientists have discovered a billion-year-old fossil in the Scottish Highlands that could reveal a new link in the evolution of animals. The microfossil was unearthed by a team of researchers, led by ...

In " origin of species" written by Charles Darwin, organisms are constantly changing to adapt to the environment by natural selection, it is said that species diverge and various species occur. This ...

Our analysis showed that temporal perception has even greater variation than scientists may have realised. Our perceptual ...