A couple of years ago we were told that the brain was hard wired to be significantly over-optimistic (see this TIME article or Google "optimism bias" for more examples). Now we're told that the opposite is true? What gives?

At least one noted film director is already using UAVs. Werner Herzog used a Skybot UAV made by British Technical Films for the opening sequence in Cave of Forgotten Dreams - the camera moves through a vineyard before soaring up and revealing the countryside of the Combe d'Arc where the cave art was found. It's an impressive shot in 2D but in 3D it takes your breath away.