Today’s Solutions: April 21, 2026

In the summer of 2005, Jeffrey Karp, a bioengineer at the Massachusetts Institute of Technology, was working late one night when he spotted a journal article on a colleague’s desk. What caught his eye was not the text itself, but the full-page colour illustration of Spider-Man that accompanied it. Intrigued, Karp sat down and started reading. The article detailed how a group of researchers had created a new synthetic material by mimicking the properties of…

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