The antipode of a point on Earth is the point diametrically opposite it—where you’d end up if you dug a tunnel straight through the Earth. Most land is antipodal to the sea. Above is a map showing antipodal points, with the overlap (orange) showing places where, if you did manage to dig straight through our planet, you’d end up on land. As you can see, if you want to dig straight to China, you better start in Chile or Argentina. Parts of Spain are antipodal to parts of New Zealand, a fact exploited by the first “Earth Sandwich”, a response to a challenge by Ze Frank.
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On September 28, 1928, Alexander Fleming accidentally discovered penicillin. He was investigating the properties of staphylococcus bacteria and, after returning from a vacation, discovered that one culture had been contaminated by a mold, and the bacteria surrounding the mould had been killed. Fleming named the mold’s secretions penicillin, and discovered that it was effective against a number of diseases. He was awarded the Nobel prize in 1945 for his discovery.