
Why does you voice get deeper when you're sick? Can a solar flare scorch the Earth? How did Axolotls evolve?Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Why does you voice get deeper when you're sick? Can a solar flare scorch the Earth? How did Axolotls evolve?Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.