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Non-native plants in homeowner's yards endanger wildlife, and experts recommend planting more than 70 percent native plants so plants, insects, and birds can thrive. Additionally, researchers are tracking the spread of neurodegenerative diseases in brains. Other segments include fracking wastewater accumulation found in freshwater mussels' shells and a new protein sequencing method used in biological research. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
