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Some residents of Belmont County in eastern Ohio have long suffered from headaches, fatigue, nausea and burning sensations in their throats and noses.

Eastern monarch butterflies covered 35 percent more ground in the mountain forests of central Mexico this past winter than they did the year before, according to a survey from the World Wildlife Fund.

North Carolina State University researchers found they could filter carbon dioxide from air and gas mixtures at promising rates using a proposed new textile-based filter that combines cotton fabric and an enzyme called carbonic anhydrase – one of nature’s tools for speeding chemical reactions.

A total knee replacement can greatly improve a patient’s quality of life, but first the procedure itself will create nearly 30 pounds of waste, about half of which presents a biohazard and requires energy-intensive treatment for safe disposal.

Trees store carbon, filter the air, create habitat, and supply a host of other benefits for animals and people.