Penn State researchers say they have discovered a biodegradable, but pricey alternative to the more than eight million tons of plastic ends up in oceans every year. Moreover, their solution comes from the very place being polluted. That's because proteins found in squid can be used to create sustainable alternatives to plastics, according to a report published in Frontiers in Chemistry. Squid grasp their prey using suction cups on their tentacles and arms. The cups are equipped with sh...