To put that in perspective, the Earth is thought to be about 4.5 billion years old, which means these "rocks"—really ...

Whether it's rivers cutting through earth, lava melting through rock, or water slicing through ice, channels all twist and ...

By Sam Cowie “They got us hooked on Western goods, but never gave us a sustainable way to make a living,” is how Nacoça “Pio” ...