This winter's unusually cold weather -- the "Polar Vortex" -- may be miserable for many trying to keep warm, but it's actually a good thing for the environment. Invasive insect species that have been ruining crops, trees and other native plants and do not have a natural predator are more likely to freeze to death during the winter months. Come spring, fewer invasive insects means more trees, plant species and farm crops. And invasive plant species that are not indigenous to cold regions will also have their path of growth slowed or destroyed. So bundle up, because the Polar Vortex is helping Mother Nature.