Chemicals found in food and solar cell technology have an interesting history – as my own research shows.
Pepper spray uses a chemical called capsaicin. It's the same compound that makes chillies hot, but in a more intense, weaponised form.
The smell of daffodils is a treat for most people, but some cannot experience the joy because they have lost their sense of smell.
Mila Supinskaya Glashchenko/Shutterstock.com
Our senses of taste and smell are linked to one another in ways that experts are continuing to explore. See if you can answer some questions for which experts have discovered some surprising answers.
Chilli might make it seem as though your face is on fire – so why is milk so soothing?
Andrés Nieto Porras
Whether it’s a few flakes on a pizza or the spiciest vindaloo known to humankind, most people can tolerate or even enjoy the tingling, burning sensation chilli can bring. So how does chilli deliver its…