Why does your hair turn gray? – Speaking of Chemistry

It’s an inevitable side effect of longevity: your hair will turn gray. In this episode, Sophia Cai chats about the chemistry of your natural hair color, why it eventually turns white, and how scientists may be able to slow that graying down.

If this episode leaves you wanting more, check out these great resources.

First hair-graying gene identified

A genome-wide association scan in admixed Latin Americans identifies loci influencing facial and scalp hair features


Junior Science and Engineering Club: Engaging Students in STEM

Batteries and current

Written by Samuel MacTavish, a 2015 Galbraith winner from Wilfred Laurier University.

At the end of high school, I started working at University of Waterloo’s “Engineering Science Quest” – a summer camp for elementary students focused on increasing interest in STEM (science, technology, engineering, and math). This job allowed me to integrate my love for science, experimentation, and learning with my passion for working with children. Eventually, it led me to pursue a career in education

When I started my first practicum placement, I noticed that students did not have the opportunity to do much science in a week. The school board I was working for recommends 100 minutes of science in a 5-day cycle (6.7% of the week). Although it is possible to integrate science into language and math classes, it doesn’t leave a lot of time to do pure, risk-free, mucking about in science.

I had a very supportive school community, and I knew I wanted to start some kind of student club, so I decided to bring my science camp background and the arsenal of engineering activities that came with it to my school in the form of a club for junior students. As luck would have it, another teacher on staff had also been thinking of starting a science club. Together, we were able to create what became the “Junior Science and Engineering Club”.

The club turned out to be a huge success – with up to 50% of eligible students attending on a regular basis. Students would meet during nutrition break for a short mini-lesson, and then complete either an experiment or a design-and-build challenge related to Ontario Science curriculum. We also posed weekly challenges for students, such as writing a “polymer poem”, creating a labeled scientific drawing of a flying machine, or designing a poster promoting hand-washing to prevent the spread of disease. The winners received small science-related prizes the following week.

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SciNews, Thursday, May 5, 2016

Benefits of one minute of intense exercise; prions might help plants remember; deadly laundry pods; understanding how water droplets form colossal clouds; the ‘inverse spin Hall effect’; carbonation helps geysers erupt – just a few of the themes in today’s eclectic collection of SciNews.  Share these stories with your students and get them excited about science.

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