FRUIT FLIES are smart. For a start—the clue is in the name—they can fly. They can also flirt; fight; form complex, long-term memories of their surroundings; and even warn one another about the ...
Less than two years ago I was an unfit, overweight and stressed-out banker lying on a sun lounger in a five-star resort. My swimming shorts were size XL, and I was so self conscious about my large ...