Two Canadian cities are doing an about face on their decision to remove flouride from drinking water after rates of tooth decay spiked, especially among children.
Source: Canadian cities rethink removal of fluoride from tap water | CBC News
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Categories: Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
[embed]https://www.youtube.com/watch?v=zUyH3XhpLTo&t=486s[/embed] We have just seen the first image of a black hole, the supermassive black hole in the galaxy M87 with a mass 6.5 billion times... read more
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
https://youtu.be/YVfyYrEmzgM Hunger claws at your belly. It tugs at your intestines, which begin to writhe, aching to be fed. Being hungry generates a powerful and often unpleasant physical... read more
Categories: Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry, Gr. 11-12 Physics
https://youtu.be/iZCRFRgSgas In 2020, NASA will send a new rover to the Martian surface with one of its objectives to search for evidence of ancient life on the planet. I made this clip as a... read more
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