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Answers to new photos are posted the next day.
Running horses played an important role in the development of a very common, modern technology. What is it?
As winter approaches here in Johnson Canyon, I will be paying close attention to katabatic winds. Without looking it up, what are katabatic winds, and why would they be important to us in the canyon?
Although we have had several freezes, the leaves here are just starting to change. Every year, the leaves start changing colors in the North first, and then the color change spreads South. This is not due to the temperature. What causes it?
Huge flocks of Pinyon Jays are visiting our feeders this week to get ready for winter. They are picking out the sunflower seeds and swallowing them whole. Why?
Queen Anne's Lace is a common wildflower in the United States, but it is not native here. How was this plant introduced into the US?
A magnet does not attract the copper or zinc in a penny. Is there any US money that is attracted to a magnet?
We are expecting a hard freeze tonight. The water in our bird baths will probably have a layer of ice, if they don't freeze solid. If cold water sinks, why does the ice form at the top?
I weighed this bowl of water. If I stick my hand in the water, and weigh it again, will it weigh more? If so, how much more. If not, why not?
My Black Widow Spider's egg case hatched, releasing hundreds of tiny babies. While prey animals tend to have lots of offspring, most predators tend to have relatively few offspring. Why do spiders have so many babies?
A normal lightning strike to the ground is the result of the attraction between the negatively charged cloud and the positive charge on the ground below. What causes lightning to strike from one negatively charged cloud to another?
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