How Much Coffee Is Too Much? Science Finally Has an Answer

Plus: elephants rewilded in South Africa, the naked mole rat queen's secret weapon, Italy's horse carriage ban, and why your camera lens changes your face

It has been a beautiful day here on the Dutch island where I’m spending part of the summer. The kind of day that makes it easy to sit down and find good stories for you. Today’s newsletter has eight of them, plus a moment of science about portrait photography, and a moment of beauty from a rainy classroom in Denmark. Oh, and then I have one more video I…