The Daintree River ferry embarks from the southern bank, where spidery coral fingers of the Great Barrier Reef almost caress the shore. Across the way, a canopy of mist hovers over one of the world's most ancient rainforests, an expanse of some 465 square miles that is more than 100 million years old. An hour's drive farther north along the rocky coast, at the Australian Canopy Crane Research Station, which is part of the Daintree Rainforest Observatory, conservation biologists are studying the effects of changing climate on this primordial spot.
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