Instead of using a bunch of equations to memorize, Yi Zhe Ang visually explains matrix transformations to provide some intuition behind the math. Make it to the end so that you can transform a 3-D image of a cat.

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Here’s how common each household type is and was — and how the makeup compares to a few decades ago.

A closer look at the age old question of where there are more bars than grocery stores, and vice versa.

Carpe diem. Seize the data, boys. Make your lives extraordinary.

When you have a big family, it’s a challenge to figure out how everyone is related. So here are some charts to help you figure it out.