Oct 05

If you have a big brain, you can credit yawning for promoting brain growth and activity, the researchers found. And if you have a small brain, you can blame the fact that you don’t yawn long enough.

Jun 09

What a smell looks like

Smells are normally invisible, but this lab in Colorado uses lasers to bring odors to life. The research is part of a nationwide project to build a robot that can smell.

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