The underlying operation is always the same: bacteria convert milk sugars into acid, the acid changes the proteins and the product keeps. What differs is which bacteria, at what temperature,…
There is a category of biological feature that only makes sense as a leftover, and the third molars are the most familiar example.
They appear late, typically in the late…
There is a particular kind of double-take that everyone has experienced. A washing machine looks startled. A car in a car park appears smug. A pattern in wood grain resolves,…
Sound behaves very differently in water than in air, and most of the differences are counterintuitive.
It travels roughly four to five times faster. It carries very much further. And,…
One fact explains most of the others: a mushroom is largely water, and everything you do to it is a decision about where that water goes. Here are fifteen.
1.…
Source :Wikipedia
Look at a river from the air and it does something that ought to require an explanation. Water flows downhill, downhill is a direction, and the shortest route down…