"Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive and flourish is owed not just to ourselves, but also to that Cosmos, ancient and vast, from which we spring." - Carl Sagan
Rainforest river, Brazil
This image from the Envisat satellite shows the Juruá River snaking through the Amazon rainforest in western Brazil. Along the river’s main course are free-standing ‘oxbow lakes’, formed when a river changes course.
Image credit: ESA