Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

Potassium-Argon dating is similar to Carbon 14 dating because it uses radioactive decay, measuring the rate of change from an unstable isotope, to a stable one. This method is a little different from ...

Despite considerable work in recent years, pinpointing the time when angiosperms originated has been challenging. However, the rapid development of molecular clock methodology has provided new tools ...

This overview argues that the story of human evolution is being reshaped by a series of recent discoveries rather than by one single breakthrough alone. It points to finds such as 3.3-million-year-old ...

But these sorts of rocks have no fossils in them. The rocks that have fossils in them are formed very slowly underwater. Water carries sediment - sand and mud – that settles on the bottom of the lake ...