If it seems too good to be true, the old cliché goes, it probably is. And it doesn’t get much gooder than the bizarre hand of the aye-aye, a specialized lemur that uses a hyper-elongated middle finger ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. The world’s largest nocturnal primate—the aye-aye—is ...

Adam Hartstone-Rose studies the muscles of forearms, which are surprisingly intricate and easily overlooked. The delicate movements of our hands, for example—like the ability to play a Mozart piano ...