There is nothing quite like looking into a crater and understanding, in a physical way, that the ground you live on is a thin crust over something enormous. These fourteen…
Source: Wikimedia Commons
There are landscapes that look like other planets, and then there is the Danakil Depression, which scientists actually use as a stand-in for one. It sits in the…
Look at Earth from orbit today and you see the famous blue marble: oceans, cloud swirls, green continents. Run the clock back roughly 700 million years and an observer in…
Source: Wikipedia
From ground level they are odd but unremarkable: bare, roughly circular patches of soil in dry grassland, each one somewhere between two and fifteen meters across, fringed by a…
Source: Wikipedia
There's something deeply calming and awe-inspiring about a beautiful lake, its still surface reflecting the sky and surrounding landscape like a mirror. Around the world, certain lakes stand out…
Source: Wikipedia
Almost everything alive on the surface of this planet runs, ultimately, on sunlight. Plants capture light and turn it into sugar. Animals eat the plants. Other animals eat those…