In a moment of idle curiosity, I wondered what would happen if for some reason, human beings suddenly became extinct. Not a cheery thought but I was curious about how long it would be before all traces of our existence disappeared so that a new future intelligent species or maybe extra-terrestrial visitors to Earth would see no trace that intelligent life had ever existed because all the artifacts we created had simply decomposed away. It seems hard to imagine since humans have covered the Earth with our creations but surely all things must pass at some time?
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I had a distant uncle who said that he suffered from chronic insomnia. When I asked him once what he did all night, he said that he just lay in bed and let his thoughts wander and dozed off from time to time for very short periods. But this did not seem to cause him to be irritable or absent-minded or show any of the symptoms that the rest of us may display on those occasions when we have not slept well. He was as fully functional as anyone else.
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In the story about the high levels of lead in the Flint, MI water supply, the scientists who first produced the measurements that indicated that there was a serious problem were from Virginia Tech University. I was intrigued by the fact that people so far away had to be called in to reveal this problem but did not follow up on why this was so.
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The Model T Ford car, produced from 1908 to 1927, is a legend in car history becoming the first to be popular in the mass market. A little fact that I had not been aware of is that the car got its name from a series of models that began with Model A and worked its way through the alphabet until they got to T when they had a winner. Not every letter corresponded to a production model since many were just prototypes.
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The desire to wield power over other people and to get enjoyment from doing so are unpleasant traits. While the structure of complex modern society requires hierarchies that have people in positions in authority over others, the exercise of power often extends well beyond the demands of one’s job and some people seem to actually enjoy having others be submissive to them and belittling and humiliating them.
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This crash test video provided by Consumer Reports in which a 2009 model car has a frontal offset collision with a much heavier 1959 model shows how much safer cars are now despite being much lighter.

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People on the eastern seaboard of the US are digging themselves out after last week’s major snowstorm. One of the things that I have long been curious about is how people actually measure the amount of snow that falls. Unlike rainfall that is relatively easy to measure, snow is very variable in its water content and winds can cause it to swirl and create drifts and uneven amounts even within a small region.
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Have you ever wondered what would happen if you placed a washing machine on a trampoline, put a brick into it, and turned it on? Me neither. But somebody thought it might be a good idea and the video below shows what happens. In general, my distaste of waste and wanton destruction of perfectly good appliances makes me reluctant to endorse this kind of thing. But I have to admit to being fascinated by the video because it made me think about the physics that was driving it.
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