I live in Los Angeles, where nature is hard to come by. Yes, there’s a large park nearby where I spend a lot of time sitting on the soccer game sidelines. And our quiet street has a lot of trees, which my dog and I examine on our daily walks. But the real wilderness—the kind where you don’t hear cars and could actually get lost? That’s not something I experience every day. And I miss it. I grew up going to national parks—hiking in the summer and cross-country skiing in the winters. I backpacked for seven days in the Sequoias when I was six years old. I wore my Yosemite…