The world's largest solar plant officially opened this week in the California desert. It produces a gross total of 392 megawatts (MW) of solar power, enough electricity to provide 140,000 homes with clean energy and avoid 400,000 metric tons of carbon dioxide per year, equal to removing 72,000 vehicles off the road. But it's complicated. It uses lots of land—a staggering 5 square miles—and growing evidence shows that the intense heat surrounding the tower and mirror technology (reaches 1,000 degrees Fahrenheit) is killing birds. What's the solution?