The air around you is holding water you cannot see, and the amount it can hold depends almost entirely on temperature. Cool it enough and the water has to go…
Both of these are recent inventions that look obvious in retrospect and took a very long time to arrive, and both do something more specific than they appear to. Here…
For most of the history of keeping bees, getting honey meant damaging the colony that produced it.
Bees build comb attached to whatever surfaces are available, fused to the walls…
There is a well-documented behaviour in animals that explains the entire history of trying to keep birds off crops, and it is almost never mentioned in that context.
The behaviour…
A balloon is a very thin sheet of stretched rubber holding back a pressure it can barely contain - and almost everything it does follows from that. Here are twelve.…