Engineering

On March 30, 1954, Toronto became the first Canadian city to open a subway system! Now why is this so exciting? Well subways are an amazing engineering feat that use steal piles, beams and timbers to create an entire transportation system underground! The Subway, mostly built underneath the extremely busy Yonge Street, had to be strongly supported, so first steel piles were placed vertically on either side of the street and then horizontal beams were placed on top to ensure t

Hexavalent Chromium is a dangerous chemical that can have severe adverse effects on blue collar workers. But what does it do, and how can...