For the first time since precise measurements began, the average monthly concentration of carbon dioxide in the atmosph…
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NASA reported that global sea levels rose more than expected last year, putting hundreds of coastal cities at greater risk of flooding. The agency had predicted a 0.43 cm rise…
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Excess weight, thinning hair, and eczema are just some of the unpleasant changes in appearance and health linked to microplastics. These tiny pieces of plastic, measuring less than 5 millimeters…
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Two Centuries of Change: The Caspian Sea’s Retreat Two hundred years ago, the city of Guryev sat on the Caspian Sea. Today it lies 35 kilometers from the shoreline —…
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Understanding Sea Level Variations We usually measure land height relative to sea level. For example, the eastern peak of Mount Elbrus rises to 5,595 meters above sea level. That makes…
