A strange honeycomb pattern appears on sea ridges around the world. We think that it is created by living creatures, but no-one has ever seen one. Oh, and there are fossils of the patterns going back 500 million years.
The glacier Okjökull in Iceland died in 2014.
We’ve all heard of the Dead Sea, so salty that people naturally float in it. But the Gaet’ale Pond in Ethiopia is saltier, and the Don Juan Pond in Antarctica is so salty that it doesn’t freeze, even at -50°C.
Around five million years ago, the Strait of Gibraltar closed and the Mediterranean dried up. When it reopened, the sea refilled in less than two years.
You can search for gold the easy way, with a pan or a pickaxe. Or you could examine the local Eucalyptus trees. This is geobotanical and biogeochemical prospecting.
Two years ago ʻOumuamua was the first interstellar object to be detected passing through our solar system. But the second interstellar object, the comet 2I/Borisov, is passing through right now.
The portable vacuum cleaner Dustbuster was built on the back of technology for the moon landings.
There is a point not more than 20km away from you right now where your normal body temperature is enough to boil the saliva off your tongue and the moisture out of your lungs.
Water freezes into ice. This is not new information to you (I hope). But which kind? Because there are eighteen different phases of ice, including electric viral space ice.
The eruption of Mount Vesuvius, which destroyed the Roman cities of Pompeii and Herculaneum, also killed the famous author of one of the earliest encyclopedias.
Underneath many large cities lie buried and lost rivers. Sometimes, they return to the surface world.
It’s no surprise that one of the ways we’ll fight climate change is to plant a lot of trees. Across the entirety of northern Africa, millions of trees are being planted to help, and also to hold back the spread of the Sahara.
Every year in late February and early March, at the South Pole research station, the last flight leaves and the last sun sets. Neither will return for months. How do you mark such an occasion? With a horror film festival, of course.
The Mars Climate Orbiter space probe cost 327 million US dollars – and it crashed because of a mix-up between the metric and imperial systems.
What’s the oldest river in the world? Well, Larapinta in western Australia only has water for a few days each year, but it has probably been around for four hundred million years.