Life Is Asymmetric. The Scientists Who Figured Out Why Won the 2026 Nobel Prize in Chemistry
The 2026 Nobel Prize in Chemistry was awarded to Henri Kagan and Kensō Soai for discovering a solution to the enigma of nature’s chemical asymmetry, a finding that opened up new avenues for manipulating the reactions used in manufacturing pharmaceuticals and other materials.
Some molecules are chiral, meaning a molecule has two forms that are mirror images of each other but not identical, like your left and right hand. One of the most mysterious chemical phenomena in biology is that living organisms contain almost exclusively one of the two forms. This is known as homochirality.
Both versions of the molecules—each called an enantiomer—have similar physical properties but can behave differently. The Nobel Committee used a simple analogy to explain this: A locksmith can create two mirror-image keys, but “only one of them fits the lock—and the lock can be damaged if your customers try to unlock it with the other...
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