Propolis season. Normally, it is dark brown in color, but it can be found in green, red, black, and white hues, depending on the sources of resin found in the particular hive area. Honey bees are opportunists, gathering what they need from available sources, and detailed analyses show that the chemical composition of propolis varies considerably from region to region, along with the vegetation. In northern temperate climates, for example, bees collect resins from trees, such as poplars and conifers (the biological role of resin in trees is to seal wounds and defend against bacteria, fungi and insects). "Typical" northern temperate
Glue stick Glue stick Glue sticks are solid adhesives in twist or push-up tubes. The user can apply glue by holding the open tube, and keeping their fingers clean. Most glue sticks are designed to glue paper and card together, and are not as strong as some liquid based variants. They can be used for craft and design, office use and at school. There are now permanent, washable, acid-free, non-toxic, solvent free, and dyed (e.g. to see where the glue is being applied easier) varieties. These are most commonly used today. In 1969 the German company Henkel invented the glue stick after