In June, the U.S. administration announced its intention to withdraw from the Paris Agreement on climate change, which envisions a resilient world with warming held well below 2°C. Yet U.S. states, cities, and businesses are setting and implementing their own science-based emission reduction targets, and leading through collaboration and supply chain engagement to build a resilient, low-carbon economy following the Paris vision. Their climate action will have an opportunity to shine at the 2018 Global Climate Action Summit hosted by California Governor Brown. What about you? Are you still in?