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Mad About Science Week – Wally Keesecker

Our week-long salute to amazing science teachers wraps up with a visit to Heritage High School in Littleton, Colorado, where chemistry teacher Wally Keesecker gets students fired up about science. Wally is well-known for his attention-grabbing…
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Halloween a great time for those dry ice demos

Halloween is right around the corner and it's a perfect time to do some really cool demonstrations. Watch the video of Steve doing cool dry ice demonstrations. First you need to get your dry ice. Your grocery store may have it, but if they…