by msander | Aug 22, 2017 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
Getting to Mars is on our minds back here on Earth, and when it comes to space travel, recycling is a space traveler’s best friend – pee included! Today we’re looking at a brilliant new potential use for pee in space, and URINE for a surprise, it...
by msander | Aug 16, 2017 | Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
Battered and deep-fried chicken might be one of the most delicious foods ever. But what makes this summer picnic staple so tasty? It all comes down to the chemistry of frying. In the latest Reactions video, learn how the delicate dance of fat at high temperatures...
by msander | Aug 2, 2017 | Gr. 11-12 Chemistry
Introduction Studies of radioactivity at the beginning of the 20th century made it possible to investigate the actual structure and mass of atoms. Gradually, evidence began to build that atoms of the same element could have different masses. These atoms were called...
by msander | Aug 2, 2017 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
AUTHOR Richard B. Rood Professor of Atmospheric, Oceanic and Space Sciences at University of Michigan Imagine the smokestacks without the billowing clouds of greenhouse gas pollution. Earth’s climate is changing rapidly. We know this from billions of...
by msander | Jul 26, 2017 | Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven’t had enough sleep — but it can also raise our blood pressure and...
by msander | Jul 26, 2017 | Gr. 11-12 Chemistry, Gr. 11-12 Physics
I have been obsessed with measurement for a long time and I’m not sure quite how it happened. The world’s roundest object played a role in this. I guess I’m just fascinated by how difficult it is to pin down a quantity like a kilogram. A physical...
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