First, it reduces ice formation within the mosquito’s cells, so that water hardens like glass but doesn’t form ice crystals that can then damage the cells.
During the current ice age glaciers have advanced and retreated over twenty times. We’re living during one of the warmer periods when the glaciers have retreated.
Now, at sunset, the lowest mile or so of the atmosphere is filled with things like vehicle exhaust, dust, smoke, and water vapor, and all these pollutants scatter light.
The large ones we see when a bird stretches its wings are “flight feathers,” but they also have fluffy ones called “down feathers.”
When winter comes, how can you tell if you're safe or on thin ice? Find out on today's Moment of Science.