How salmon swim upstream
Leaking nuclear waste dome in the Marshall Islands
Vatnajökull National Park in Iceland
Indonesia: this is the largest highly acidic lake in the world
Sociable weaver nests provide shelter to many birds
What to do if you encounter a snake
Yakushima's magical cedar forest
Fly Geyser in Nevada is a manmade wonder
Sailing stones of Racetrack Playa, a mysterious phenomenon
These people joined the "fertile disobedience" movement to protect nature
This is one of the most invasive aquatic plants in the world
If there were only 100 animals on Earth...
How did the great auk go extinct?
How to make your own zero-waste lip balm
Behind the scenes: Activists crash the Louis Vuitton show
The metamorphosis of a stalk-eyed fly
Hvítserkur, a majestic dark monolith in Iceland
What is ethological equitation?
SUVs are a major source of pollution
The Iberian lynx is no longer critically endangered
Meet Delle the robot dolphin
Japan's glowing Kochia Hill
Your Waste Can Kill. This Turtle Was Lucky
This family is living an eco-friendly lifestyle
The roof of the world is melting
The false killer whale, a little-known cetacean
Is the European hedgehog threatened with extinction?
5 indigenous leaders fighting for the planet
Niue declared world's first 'Dark Sky nation'
Meet the red-shanked douc
What is lightning?
Why reindeer eyes change color over the course of the year
The truth behind "cute" animal videos
The world's largest land-dwelling arthropod
Mysterious Great Blue Hole
Meet the kagu, the barking bird that narrowly avoided extinction
Table Mountain's cascade of clouds
How birds synchronize their flight
This is the environmental footprint of bottled water
These tropical species are travelling to the north
Should we be picking up dead leaves?
Why some animals change color during fall
Why the U.S. has so many big cats in captivity
The "water palace" was built in the 18th century by the raja of Jaipur state
How the sidewinder rattlesnake moves around
Saffron is the priciest spice on the planet
The effects of climate change in the world
Why does the earwig have those pincers?
Why leaves fall in autumn
The Chocolate Hills are a geological oddity