Ever wonder why the sky is blue, vs. say red, orange or purple? An effect called Rayleigh Scattering is part of the reason we ...

It might seem like a simple question. But the science behind a blue sky isn't that easy. For starters, it involves something ...

But despite attempts from the best scientists and philosophers, what color truly is, if it’s even anything tangible, remains elusive. When it comes to the vexing problem of red or any other gradient, ...