For some time, I'd been searching for Dr Christopher Filardi, a biologist with decades of field experience in the Solomon Islands. I wanted to interview him for a book I was writing, but my e-mail, sent to the American Museum of Natural History, which once listed him as the director of Pacific programmes at its Centre for Biodiversity and Conservation, bounced back.
The auto-reply said he'd moved to another organisation, Conservation International. When I wrote him there, another auto-reply said he had moved on. I couldn't find him on Facebook or Twitter. The man seemed to have vanished.