Comments on: Scientists watched cracked metal heal itself in an ‘absolutely stunning’ discovery https://lifeboat.com/blog/2023/07/scientists-watched-cracked-metal-heal-itself-in-an-absolutely-stunning-discovery Safeguarding Humanity Fri, 21 Jul 2023 21:26:52 +0000 hourly 1 https://wordpress.org/?v=6.6.1