A problem with another one of the eight prevalves in the Artemis 1 Core Stage…
  • NASASpaceflight.com
  • Feb 27, 2021

Second prevalve issue delays completion of SLS Core Stage Green Run campaign - NASASpaceFlight.com - NASASpaceflight.com

A problem with another one of the eight prevalves in the Artemis 1 Core Stage for NASA’s Space Launch System (SLS) has postponed a second test-firing to wrap up the Green Run campaign. The SLS Progra… [+6332 chars]

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New process makes 'biodegradable' plastics truly compostable - Phys.org
  • Phys.Org
  • Apr 21, 2021

Biodegradable plastics have been advertised as one solution to the plastic pollution problem bedeviling the world, but today's "compostable" plastic bags, utensils and cup lids don't break down during typical composting and contaminate other recyclable plasti…...