in 1497 Vasco da Gama, sailing for Portugal, decided to go the other way to the Orient, around the bottom of Africa. This was a much trickier proposition than it sounds. Contrary prevailing winds and currents wouldn’t allow a southern-sailing vessel to simply follow the coastline, as logic would indicate. Instead it was necessary for Gama to sail far out into the Atlantic Ocean—almost to Brazil, in fact, though he didn’t know it—to catch easterly breezes that would shoot his fleet around the southern cape. This made it a truly epic voyage. Europeans had never sailed this far before. Gama’s
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