This cluster of papers explores the diverse aspects of lipid metabolism, including the synthesis and storage of lipids in various organisms. It covers topics such as lipid droplets, triacylglycerol synthesis, adipose tissue lipolysis, glycerolipids, fatty acid biosynthesis, phospholipid metabolism, diacylglycerol acyltransferase, perilipin proteins, seed oil production, and chloroplast lipid biogenesis.