Sacramento is one of California’s most light polluted cities. The Bortle scale is a nine-level numeric scale measuring the night sky's brightness of specific locations with one being perfect ...

TikTok has given us plenty of fun things to do over the years. Now it's impacting how we see our friends, family and significant others. OK, maybe not impacting it, but TikTok's 'How we see each other ...

How do we see 3D images? How does the brain represent the world? Luckily, what she’s learned about faces is helping Doris expand her research. Doris Tsao: I’ve slowly realized that this problem of ...

I reckon most of us have had the thought at least once – if I’m looking at a “red” ball, why would I think the other person looking at the same object sees the colour the same way as me? After all, ...