Still depending on your kids to figure out why your smartphone’s acting weird? As a rule, children are wired to explore, experiment and get results through trial and error – usually more quickly than grownups. But why?

University of California, Berkeley, scientists inserted a gene for a green-light receptor into the eyes of blind mice and, a month later, they were navigating around obstacles as easily as mice with no vision problems. The researchers say that, within as little as three years, the gene therapy — delivered via an inactivated virus — could be tried in humans who’ve lost sight because of retinal degeneration, ideally giving them enough vision to move around and potentially restoring their ability to read or watch video.

The pre-Columbian city of Cahokia was once among the most populous and bustling settlements north of Mexico. But by 1400 A.D., Cahokia’s population had dwindled to virtually nothing. While theories abound about what happened to the indigenous people of Cahokia, AJ White, a Ph.D. student in anthropology at UC Berkeley, has studied ancient poop samples to connect the city’s 13th century population plunge – at least in part – to climate change.