Some of the most productive apple regions in America are facing big challenges from a changing climate, according to a Washington State University study. Researchers analyzed over 40 years of climate conditions that impact the growth cycle of apple trees from bud break and flowering through fruit development, maturation and color development. While many growing areas are facing increased climate risks, the top three largest apple producing counties in the U.S. were among the most impacted: Yakima in Washington, Kent in Michigan and Wayne in New York. In particular, Yakima County, the largest of the three with more than 48,800 acres of apple orchards, has seen harmful trends in five of the six metrics the researchers analyzed.

In the Arctic, the old, multiyear ice is increasingly melting, dramatically reducing the frequency and size of pressure ridges. These ridges are created when ice floes press against each other and become stacked, and are a characteristic feature of Arctic sea ice, an obstacle for shipping, but also an essential component of the ecosystem. In a recently released study in the journal Nature Climate Change, experts from the Alfred Wegener Institute report on this trend and analyse observational data from three decades of aerial surveys.