Could one of the staples of a gamer’s diet actually improve physiological health the same way it has for mice and worms? Is it possible to harness plant photosynthesis with a synthetic leaf that mirrors the same chemical process to replace fossil fuels? Will small armies of robot cartographers replace Google Street View cars -- and eventually explore the unknowns of Earth’s oceans? How long have hominins existed in Greece, and are our Mediterranean ancestors hundreds of thousands of years older than we think?