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Phil asks Dr Karl questions on behalf of the listeners, including how lightning works and whether a mouse and an elephant have the same number of heartbeats in their lifetime.

<p>Phil asks Dr Karl questions on behalf of the listeners, including how lightning works and whether a mouse and an elephant have the same number of heartbeats in their lifetime.</p>

Join Phil O'Neil from midnight to 5.30am Tuesday to Friday.

<p>Join Phil O'Neil from midnight to 5.30am Tuesday to Friday.</p>