Today we’re covering ideas 13 through 9! These include a fascinating discovery about NASCAR and psychology, a clock that’s so accurate it’s reshaping our understanding of time, a tasty way to make concrete stronger (and more environmentally friendly), and some truly delightful revelations about dinosaurs. Plus: We explain particle physics through song.

We’re giving away great prizes every day this week! Head over to our Instagram @parttimegenius to find out how you can win.

Check out musician David Nagler’s website and his band, As For the Future!

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25 Greatest Science Ideas Countdown: Day 3