Brian McLogan
Solving by completing the square
👉 Learn how to solve quadratic equations by completing the square. When solving a quadratic equation by completing the square, we first take the constant term to the other side of the equation and create a perfect square trinomial with...
Curated Video
No Major Cities: Why So Few Canadians Live In On The East Coast
Much like the United States, Canada's first European settlements began on its east coast. But where many of the US's first settlements would eventually emerge as major population centers such as Boston, New York City, and Philadelphia,...
Curated Video
Why So Many Canadians Live In This Tiny Area: The Golden Horseshoe
Canada is the second largest country in the world when it comes to area. Despite this, over one quarter of all Canadians live in an area that makes up less than 1% of all land. This region has been dubbed Canada's "Golden Horseshoe"...
Curated Video
Why So Few Americans Live In This Huge Area In The Middle Of The Country
The United States has an interesting population distribution. You can find any number of videos talking about why so many more people live on the eastern half of the country. But what's rarely talked about is this large empty belt in the...
Curated Video
Why So Few Americans Live In This HUGE Area In The Northern Part Of The Country
There are a lot of Americans these days. But despite being the world's third largest country by population, there exists a huge area in the northern part of the contiguous USA that is pretty empty. And this is despite the fact that...
MinuteEarth
How Much Food Is There On Earth?
Food already in cupboards, supermarkets, & warehouses could feed humanity for 4 months, but potential food - berries, termites & krill - could extend that by another year. ___________________________________________ To learn more, start...
Curated Video
Why The United States Gets So Many Powerful Tornadoes
Tornadoes are one of Earth's most incredible natural phenomena. But while every continent gets tornadoes to some degree, the United States in particular gets far more, at a higher frequency, to a greater degree of strength than almost...
Curated Video
High Speed Rail In The Pacific Northwest: Connecting Portland, Seattle and Vancouver!
High speed rail makes the most sense, when it's able to connect major population centers in a more convenient way than either personal vehicles or airplanes. With this in mind, the Pacific Northwest makes for almost a perfect scenario...
TED-Ed
How One Scientist Averted a National Health Crisis
Between 1957 and 1962, thousands of infants born in Canada, Great Britain, and Germany had serious deformities due to thalidomide, a drug marketed to pregnant women as a mild sleeping aid and to relieve pregnancy nausea. However, the...