Bioinspired fabric architecture harnessing anisotropy for omnidirectional mechanical protection

Proceedings of the National Academy of Sciences, Volume 123, Issue 38, September 2026. SignificancePowder bed fusion-printed fiber-reinforced composites exhibit high specific strength and energy absorption, making them attractive for mechanical protection applications. However, fiber alignment induced by powder recoating imposes pronounced ...

pnas.org ·8d ago

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Read the original at pnas.org →

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Is it the screens? Or education systems?

The Dark Ages implies television and phones are the main cause of cognitive decline. This fails to explain the patterns in PISA scores. Why did England and Scotland fall so precipitously from 2000 to 2005 whilst America improved? Why did England and Estonia hold steady after 2015 whilst most other OECD countries declined?

Television and mobile phones not primary cause of cognitive decline
England, Scotland declined 2000-2005 while America improved
East Asian countries stable or improved due to rigorous education systems

8d ago ·marginalrevolution.com