In Turkmenistan, this crater has been burning non-stop since 1971
#TBT: The Great Emu War
These fascinating snowy formations could disappear
The close relationship between fungi and trees
This French hiking trail is one of the longest in Europe
Why the dodo went extinct
The Nā Pali coast offers breathtaking landscapes
The wolverine is the most ferocious animal of the Far North
How do frigatebirds find their mates?
Why chilies are hot
Sister Act: California's 'weed nuns'
The serval is the second-fastest cat after the cheetah