With the heat of summer upon us, we hear a lot about the heat index in our weather forecasts these days. But what exactly is the heat index and how is it calculated? "It's kind of the summer version ...

With astronomical summer right around the corner this upcoming Thursday, it's about time we enter a period of excessive heat across eastern Iowa. Actual air temperatures will climb into the 90s in ...

Energy is required to break a covalent bond between two atoms to overcome the attractive force. Bond breaking is an endothermic process. The opposite is true if we want to make new bonds. Energy is ...