tweak
Genetic Tweak Gave Early Humans a Leg Up
A mutation in a key gene may have endowed humans with superior endurance—allowing them to compete better with other animals on the savanna. Christopher Intaglia…
Chemical Tweak Recycles Polyurethane into Glue
It’s not easy to recycle polyurethane, so it’s usually tossed out or burned. But a chemical tweak can turn polyurethane into glue. Christine Herman reports. Lea…






