I noticed this week (October 8th), that though the water of the South Fork in the Ririe area is clear, there are huge clumps of algae in the water and covering the rocks. I’ve never noticed this much algae before. Is there a reason?

Question answered by Gregg Losinski, Environmental Science Educator This is a great question based on an interesting observation. Like many great questions, the answer may not be a simple one. Without knowing what exactly was being observed it is hard to give a definitive answer, but the potential answers are all possible. The most important…

We are currently studying clouds and rain. We were wondering what percentage of a cloud is actually water and what percentage of a rain cloud is dust and or other things?

Answered by Dennis Finn, Research Meteorologist, NOAA, Idaho Falls Most water in the atmosphere is in the form of water vapor, a gas. Warm air holds more water vapor than cold air. For a climate like Idaho Falls, water vapor content is typically about 0.4-0.5% in the summer and less than half of that during…

Why is snow soft and ice hard?

Answered by Alex DeSmet, Meteorologist, National Weather Service, Pocatello This is a good question, because snow and ice are both water in a frozen form. So, why do they feel so much different to us? Well, the answer is actually fairly simple, and it has to do with air. As snowflakes fall to the ground and…

If molecules in colder things get denser, why does ice float?

Answered by Flint Hall, Hydrogeologist, Idaho Department of Environmental Quality Water is the most important chemical to life on earth and perhaps anywhere else in the universe. A chemical is a substance with a specific composition (or ingredients). The most basic chemicals are atoms of elements. These elements can combine to form molecules with specific…