In this episode of Science Quickly, we examine a proposal to roll back protections for millions of acres of U.S. roadless forests, explore how climate change is opening a new Arctic shipping route and discuss new research suggesting that extreme weather can shape how Americans view their future. Plus, scientists uncover the secrets of shrew noses and narwhal tusks.Recommended Reading:How melting Arctic ice has created a new Silk RoadTrump moves to end protections for 44 million acres of U.S. forestsExtreme weather is making Americans feel powerlessE-mail us at [email protected] if you have any questions, comments or ideas for stories we should cover!Discover something new everyday: subscribe to Scientific American and sign up for Today in Science, our daily newsletter.Science Quickly is produced by Rachel Feltman, Fonda Mwangi and Jeff DelViscio. This episode was edited by Alex Sugiura, with fact-checking by Marielle Issa and Aaron Shattuck. Our theme music was composed by Dominic Smith.Learn more about your ad choices. Visit megaphone.fm/adchoices