I Learned This Today

#640 How do spiders make webs?

Watch this on YouTube How do spiders make webs? By producing silk from their bodies and weaving it into a strong web. […]

Watch this on YouTube What is the difference between a moth and a butterfly? Amongst other things, their wings, their bodies, how […]

What are the Dead Sea Scrolls? They are a series of ancient Jewish manuscripts discovered between 1946 and 1956 on the northern […]

How does cacao become chocolate? Through fermentation, drying, roasting, grinding, and adding milk and sugar. Cacao beans grow on a cacao tree, […]

What is the difference between socialism and communism? They are sometimes confused as being the same thing, but socialism and communism have […]

Why do some trees make rubber? It protects the trees against pests and helps them heal when they are injured. Rubber is […]

Do the gulags still exist? Technically no, but actually yes. The gulag is not actually a place. We use the expression gulag […]

What is botulism? Botulism is an illness caused by a toxin that the Clostridium botulinum bacteria produces. Clostridium botulinum is a very […]

What is the difference between a castle, a fort, and a palace? A castle is a fortified building constructed for the nobility. […]

When did people start using soap? In 2800 BC in Babylonia. Archaeologists have found soap-like materials in clay cylinders that have been […]