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Everyone seems to be wondering, "What happened to spring?" Last month, a persistent flow of Arctic air blanketed the eastern two-thirds of the nation. Record cold, and even snow in some areas, delayed the onset of warm spring-like conditions.

China has implemented some of the world’s most ambitious policies to protect and restore forests, yet these programs still miss the mark, according to a team of researchers led by Princeton University.

A new satellite that measures and provides detailed carbon balance information is one of the most important new tools in carbon measurement since infrared light, believe researchers from the University of Copenhagen. The researchers expect the satellite to be a valuable tool for the UN’s work on climate change related to the Paris climate accord.

Scientists drilling deep into ancient rocks in the Arizona desert say they have documented a gradual shift in Earth’s orbit that repeats regularly every 405,000 years, playing a role in natural climate swings. Astrophysicists have long hypothesized that the cycle exists based on calculations of celestial mechanics, but the authors of the new research have found the first verifiable physical evidence. They showed that the cycle has been stable for hundreds of millions of years, from before the rise of dinosaurs, and is still active today. The research may have implications not only for climate studies, but our understanding of the evolution of life on Earth, and the evolution of the Solar System. It appears this week in the Proceedings of the National Academy of Sciences.

NOAA’s National Weather Service is tapping technology to automate weather balloon launches in Alaska, a move that will allow staff to improve public service across the state while saving federal tax dollars.