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Topic: Sahara Desert
What is dust made of?
Less than a tenth the size of an ant, a dust mite’s whole world is contained in the dusty film under a bed or in a forgotten corner. This realm is right under our noses, but from our perspective, the tiny specks of br...
NASA simulates how dust, smoke, and sea salt have traveled the planet
Watch as sea salt, dust, and smoke—aerosol particles traveling on the winds—have moved across our planet in 2017. This animated simulation, "based on both satellite observations and computer models that use physical e...
The ferocious predatory dinosaurs of Cretaceous Sahara
In Cretaceous times (around 100 million years ago), North Africa was home to a huge river system and a bizarre menagerie of giant prehistoric predators -- including the Spinosaurus, a dinosaur even more fearsome than ...
The Basics of Freshwater + Water, Water, Everywhere?
With around 326,000,000,000,000,000,000 gallons (326 million trillion gallons or about 1,260,000,000,000,000,000,000 liters) of water on Earth, covering 71% of the Earth's surface, you'd think it would always be easy ...
Desert Fox Hunts A Lesser Jerboa – BBC’s Wild Arabia
The fennec fox is hungry. The lesser jerboa doesn't want to be eaten. How does the jerboa escape the fennec fox? This stunning chase scene from the BBC's Wild Arabia showcases some powerful kangaroo legs and brilliant...
Satellite Tracks Saharan Dust to Amazon in 3-D – NASA
Watch 182 million tons of dust ride the wind out of Africa's Sahara Desert in 3D, as tracked from 2007 through 2013 by lidar, thanks to CALIPSO, the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation sa...
Bigger Than T. Rex: Spinosaurus
The water-loving Spinosaurus had a spiny "sail" on its back, and a crocodile-like head, neck and tail, but was much larger than the Tyrannosaurus Rex. At 50 feet long, it's the largest carnivore to walk (and swim) the...