The biggest cave on Earth is higher than a 40-story building
It's so big that it has its own jungle, its own river and its own clouds.
The Gulf of Aqaba : a coral reef resisting global warming
How do honeybees build their hives?
In Peru, indigenous people speak out against the oil industry
Mimosa pudica has amazing abilities
The eco-friendly Bec-Hellouin farm is a model in France
Mata Atlântica, Brazil's other endangered forest