Sarene Marshall is the managing director for The Nature Conservancy's Global Climate Change Team. She works with governments, scientists and local communities around the world to build awareness about and prepare people for the worst consequences of climate change. With the increasing number of 100-degree summer days where she lives, in Arlington, Virginia, she notes that "it’s no longer as simple as letting your kids explore nature in their school-free summer days. Our family has had to change our summer schedule so that my two girls can get to the pool when it opens at 9 a.m. and be back inside during peak hot hours. Rather than lots of bike-riding, we’ve had to play more puzzles and games, and the girls have put on more indoor performances this summer."