Capping the Johnson-Su pile
Check out my latest video on youtube! A little microscopy at the end as well. https://m.youtube.com/watch?v=plBMkmy_Rwg&fbclid=IwQ0xDSwPubz5leHRuA2FlbQIxMABzcnRjBmFwcF9pZAwzNTA2ODU1MzE3MjgAAR45anCRrv2XJ_YHqkBkh7xanevI771P2pkXNC_fkLIMj5b2Sxjmn22MY5vEGA_aem_ARlsgUf43Y5MQiinJJeu-Q