<p>How do we remove earwax safely? Why is it cold at the peak of a mountain if hot air rises? Why don't scars tan?</p><p>Bianca Nogrady answers these questions and more on triple j Mornings with Lucy Smith.</p>

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Join Dr Karl Kruszelnicki, Lucy Smith and their scientific guests, with a bunch of curious triple j listeners for a weekly injection of science, myth-bashing and answers!

Flushing etiquette, growing pains and heat vs temperature

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How do we remove earwax safely? Why is it cold at the peak of a mountain if hot air rises? Why don't scars tan? Bianca Nogrady answers these questions and more on triple j Mornings with Lucy Smith.

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