I write about the world of biology. Over 390 million years ago, the ancestors of modern land animals said, “Feet before fins,” and took their first steps on earth. Today, a research team at ...

One of the most important milestones in the evolution of life began some 400 million years ago, when the first animals made their way from water onto land. At that time, known as the Devonian ...

when the first animals crawled out of the sea onto land. Some details remain fuzzy and under investigation. But we know for certain that this back-to-the-water evolution did occur, thanks to a ...

Their land-dwelling ancestors lived about 50 million years ago. Meet Pakicetus, a goat-sized, four-legged creature that scientists recognise as one of the first cetaceans (the group of marine animals ...