InsideClimate: Melting sea ice and warmer temperatures in the Arctic are to blame for the brutal cold snaps that have plagued parts of Asia and North America in recent years, according to new research by Korean and European scientists released Monday. The study, published in the peer-reviewed journal Nature Geoscience, adds to the growing evidence linking rising Arctic temperatures to changing weather patterns across the globe. It also helps further debunk one of climate deniers' favorite arguments: cold weather...