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• Satellite images are reading penguin droppings across Antarctica, and the color of the stains is revealing how climate change is reshaping their food web 
• Scientists are testing “flying doors” that keep trawls above the seabed, and the result could change how fishing scars the ocean floor 
• A $100 battery printed in Belfast could replace expensive lab equipment, and the breakthrough may change how scientists test renewable energy storage
• New Orleans is collecting thousands of used Christmas trees and dropping them from helicopters to slow the loss of land, which has already exceeded 5,000 square kilometers
• Scientists played human voices near Alaska salmon streams, and bears and eagles fled before the forest could receive what the fish carried 
• Thirty beluga whales were left behind at a closed marine park, and the first rescue trip has already ended in Texas 
• A monkey with orange lips was hiding in Congo’s rainforest, and scientists say its discovery is rare enough to change what they knew 
• An American blue crab invaded Italy’s clam lagoons, and fishers in the Po Delta are watching their old work disappear