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55-Million-Year-Old Predatory Mammal Footprint Found in Antarctica

A single fossilized footprint found in volcanic mud on a remote Antarctic island is the first known trackway from a mammal in Antarctica, and the earliest evidence anywhere on the continent of a carnivorous mammal. The post 55-Million-Year-Old Predatory Mammal Footprint Found in Antarctica appeared first on Sci.News: Breaking Science News .

55-Million-Year-Old Predatory Mammal Footprint Found in Antarctica

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Why atmospheric nanoparticles grow at similar rates everywhere

Aerosols have a profound influence on air quality, human health, clouds and climate, but new particle formation in the atmosphere has remained a scientific conundrum. Large fractions of airborne fine particulate matter consist of secondary organic aerosols (SOA) formed by gas-to-particle conversion of organic precursor molecules in the…

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