Today’s Solutions: December 07, 2025
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Smell and memories

Composing a smellscape: how your brain interprets scents

Scent is the sense most commonly associated with memory. We all have a great, or a gross, smell that brings us right back to childhood and all the feelings that come with it. How does that happen, though? How does the brain interpret smells and link them to good, bad, or nuanced feelings?  A Read More...

Exoplanet in deep space. Elements of this image were furnished by NASA.

How many worlds exist outside our solar system?

Exoplanets are worlds just like our own that are revolving around a star. Here at The Optimist Daily, we’ve commonly reported on the discovery of new exoplanets, like the first time an exoplanet has been spotted outside our galaxy, or this peculiar planet with the shortest orbit around a star Read More...