An occasional series where Mongabay founder Rhett Ayers Butler shares analysis, perspectives and story summaries. The risks of field science are usually described in abstract terms. Weather turns.

Watch this footage of two Megamouth sharks, which is apparently a rare sighting. 'Avatar' star Sigourney Weaver admits she ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Humans, under optimal conditions, can live to an age of 100 ...