Rocks
Number: 0184 Anonymous: An introduction to rocks and the rock cycle. Sorry, but this content is reserved for subscribers only.The $20/year subscription helps cover the costs of producing new videos,...
View ArticleWater Cycle
Number: 0188 Anonymous: Have you ever really thought about the water cycle, about how old that glass of water really is, and all the places it has been? Sorry, but this content is reserved for...
View ArticleRecycle
Number: 0176 Anonymous: With Americans producing 600,000 tons of garbage a day, it is important to look at what we throw away. Sorry, but this content is reserved for subscribers only.The $20/year...
View ArticleScience Photo of the Day #850
I photographed this oil refinery in New Mexico. How do they make gasoline from crude oil? thumb: read more
View ArticleScience Photo of the Day #851
This is Glen Canyon Dam in Page, Arizona. It is a hydroelectric dam, converting the potential energy of the lake water into electrical energy. Energy does not just appear out of nowhere, so the...
View ArticleScience Photo of the Day #610
The Hindenburg used hydrogen gas for lifting, which was flammable. Modern blimps use helium, which does not burn. Where does helium come from?thumb: read more
View ArticleScience Photo of the Day #278
This shot is from my Floating Bubbles video. The balloon is filled with helium. Where does helium come from? (Thanks Abbie for the great question!)thumb: read more
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