A distorted view

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About this episode

With the United Nations encouraging wider use of the Equal Earth map, a projection designed to better represent the true size of Earth's landmasses, the Unexpected Elements team have been thinking about distortion and the surprising new ways we can see the world and beyond. We discover that every city's subway system has its own unique microbial fingerprint, so distinctive that researchers can identify a location from a simple swab. Then we meet the black-capped chickadee, a tiny bird whose remarkable memory-map helps it keep track of thousands of hidden food stores. Astrophysicist Miguel Zumalacárregui joins us to explain gravitational lensing, the phenomenon that bends and distorts light…