Cars record how far they've travelled but not how long they've idled for, both affect the engine. Submitted by Critwhoris t3_124mw5k on March 28, 2023 at 12:15 PM in Showerthoughts No comments 0
If UV radiation is used to disinfect and sterilise things then why isn't everything the sun touches (your skin, the sidewalk etc) sterile? Submitted by Critwhoris t3_11ti4nm on March 17, 2023 at 5:28 AM in askscience 135 comments 569