Doodling in Math Class: Connecting Dots

A Year of Alignment for #TheHartBrand As I look back on 2025, one word shines through: alignment. This year has been the biggest and best yet for my business, and it’s all thanks to each and every one of you—my incredible customers—who not only excel in the arena but also shine as business owners and genuinely wonderful people. From the very start, my vision for the Hart brand was to help grow a better industry by creating content that’s genuine and fresh. This year, you embraced that vision wit

Heart Foundation-funded research over the last six-decades has helped deliver world-class breakthroughs including the invention of the pacemaker, development of new imaging techniques, and improved treatments for high blood pressure, high cholesterol, heart failure, kidney damage and blood vessel disease. Now you can discover the researchers and 2026 Heart Foundation grant recipients behind the next generation of heart health innovations. | Heart Foundation

Logarithmic scale (with Vi Hart)

Vi Hart’s Annual Pi Day Video #PiDay