by Milan Sanader | Sep 16, 2020 | Gr 9-10 Science, Gr. 11-12 Chemistry
Stephanie Kwolek’s invention of Kevlar has saved countless lives over the past 40 years. Kevlar is a fiber five times stronger than steel that is now used in numerous products ranging from boots for firefighters to spacecraft — and most famously, in bulletproof...
by Milan Sanader | Sep 3, 2020 | All Science Teachers, Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
A team of international astronomers has caught the merger of two black holes of unprecedented masses creating yet another massive black hole — one that astronomers believed existed in theory but that had never been detected. The two caught in the act were roughly 85...
by Milan Sanader | Aug 11, 2020 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology
In their bid to survive, bed bugs wait until humans and animals are sleeping, then come out to suckle their blood. Like mosquitoes, these pests use an elongated proboscis to pierce the skin and gather their blood meal. They need to feed weekly to grow through the...
by Milan Sanader | Jul 7, 2020 | All Science Teachers, Gr 4-6 Science & Tech, Gr 9-10 Science
If you’re willing to get up early this week, you’re in for a magnificent sight: an early morning comet. Comet NEOWISE, named for the space telescope that discovered it on March 27, was at first visible only through powerful telescopes. But it has recently...
by Milan Sanader | Jun 3, 2020 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry
Everyone knows that vegetable oil and water don’t mix. That’s because the two liquids have different densities. Density is basically how much stuff is smashed into a particular area or a comparison between an objects mass and volume. So, the exact same...
by Milan Sanader | May 6, 2020 | Gr 9-10 Science, Gr. 11-12 Biology
Oxygen forms about 21% of the air around us. In your body, oxygen forms a vital role in the production of energy in most cells. But if gases can only efficiently diffuse across tiny distances, how does oxygen reach the cells deep inside your body? Enda Butler tracks...
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