What's so special about Leonardo da Vinci's Vitruvian Man? With arms outstretched, the man fills the irreconcilable spaces of a circle and a square -- symbolizing the Renaissance-era belief in the mutable nature of humankind. James Earle explains the geometric, religious and philosophical significance of this deceptively simple drawing. [Directe...

Is she turning towards you or away from you? No one can agree. She’s the subject of Dutch Master Johannes Vermeer’s "Girl with the Pearl Earring," a painting often referred to as the ‘Mona Lisa of the North.’ But what makes this painting so captivating? James Earle explains how this work represents the birth of a modern perspective on economics,...

You don't have to be a scientist to help protect the world's oceans, says underwater drone expert and TED Fellow David Lang -- in fact, ordinary citizens have pulled together to save the planet's natural treasures many times in history. Lang asks us to take a lesson from the story of the US National Parks Service, offering a three-point plan for...