A Moment of Science
You took a stack of paper and burnt it. What happened to the papers when you lit them up?
You've heard of first-hand and second-hand smoke but what do you know about third-hand smoke? Find out on A Moment of Science.
Fire is a chemical reaction between oxygen molecules and some kind of fuel. This reaction releases the heat and light that we call fire.
Firefighters expose themselves to dangerous chemicals and heat while they do their job.
Say you're walking down a city street, minding your own business, when you approach a manhole...
“Squares” was the somewhat rude but good-natured term used for people who have consistent, if perhaps a little bland, emotional lives. A long-term study conducted from 1942 to the present suggests that squares have the last laugh. Learn more on this Moment of Science.
What's as light as smoke but strong as a brick? Find out on this Moment of Science.
Wildfires destroy enormous areas of forest every year. However, after forest fires, some plants manage to grow back at accelerated speeds.
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.
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