Endangered Sharks Taking Over Once-Polluted River Thames

Endangered sharks are swimming around the Queen! The UK’s iconic River Thames was so polluted in the 1950’s, scientists called it “biologically dead,” but now, the Thames is brimming with sea life! Three types of endangered native sharks have started populating the Thames again, along with 115 types of fish. This is great progress from that 1957 study, but today’s researchers are worried all that progress will be lost to rising temperatures and climate change.