Look at animals in captivity in general. Even when all of their needs are taken with, many of them cannot deal with the stress of unusual environments.

Humans are not bad at dealing with stress. Humans create these scenarios that actually lead to us having a lot more stresses than most other animals come up and for the most part we deal with those scenarios fairly well. We are actually super adapted to dealing with stress compared to most organisms.

And the tools necessary to make these measurements are very simple. Literally all you need is a stick in the ground and a few pebbles or something else to mark the longest shadow the stick casts each day.

For thousands of years plants were our primary source of power in the form of burning wood. It was even the primary source of power at the beginning of the industrial revolution.

The reason it phased away as a source of industrial level power is because it just is not concentrated enough. That and the fact that extracting it has so many negative side effects for the environment.

Also playing a part is the fact that it is often rude to fully express your emotions so we figure out ways to at least partially hide them.

If your boss does something stupid and you are in the back of the room, you probably don't want to laugh out loud and draw attention to yourself, but a little chuckle that the people around you can see might be an appropriate compromise that you instinctively settle on.

That causes it to switch over to the hot water pipes. But the water that you 1st get out of those pipes is not water that is in the water heater. It is water that has been sitting in the pipes and has gotten to the same temperature as the air around it. Depending on where you are and what time of year it is, that can end up being a lot colder than the "cold" water. Because the water we think of as the cold water is not actually cooled, but just kept in pipes largely underground.

It was also the end of the era in which most children watched their cartoons in Saturday morning, because broadcast television was becoming less of a big deal and there was always cartoons on one of the cable channels.