Friday, June 18, 2021

Meringue-like material could make aircraft as quiet as a hairdryer

An incredibly light new material can reduce aircraft engine noise and improve passenger comfort. The graphene oxide-polyvinyl alcohol aerogel weighs just 2.1kg per cubic meter, making it the lightest sound insulation ever manufactured.

from Latest Science News -- ScienceDaily https://ift.tt/3cQW15h
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Study finds untreated sleep apnea doubles Parkinson’s risk

A massive veteran study found a strong connection between untreated sleep apnea and a higher chance of Parkinson’s. CPAP users had much lowe...