Using informed but clear language, she guides the reader through Darwin's own encounters with giant tortoises, iguanas and finches on these islands in the 1830s that led him, years later, to formulate his theories about the origin and evolution of species.

ECONOMIST: Island life

He sets clear and concise goals, and guides teams in how to achieve them in the best way possible.

FORBES: Introducing Yahoo's New CTO, Raymie Stata

One of the guides uses a machete to clear the way.

FORBES: Magazine Article