When I was a child (circa year 2000), I watched a documentary (in English) about some biologists doing research about jungle (perhaps Amazon). The biologists lived in a base which was a huge inflatable structure, that was resting on top of the trees. The base had some labs in it and living quarters.
I can't find anything related on Google. It's just spam about inflatable castles.
Can someone tell me what was the name of the research project from the documentary I watched?