The Winogradsky column, invented by Sergei Winogradsky, is a device for culturing a large diversity of microorganisms. Pond mud and water are mixed into a column using carbon sources like newspapers and sulfur sources like egg yolks. Left in the sun for a few months, the column becomes a colony rich with microorganisms, bacteria, cyanobacteria, and algae. In this video, scientist Karen Dodson shows you how to make your own.
Just updated your iPhone? You'll find updated Apple Intelligence capabilities, new wallpapers, and enhancements to Calculator, PDF cropping, and Live Voicemail, among other useful features. Find out what's new and changed on your iPhone with the iOS 18.3 update.
Comments
No Comments Exist
Be the first, drop a comment!