Could kānuka stop kauri dieback?

Science correspondent Siouxsie Wiles looks at new research suggesting kanuka produces compounds with the ability to paralyse the spores that spread kauri dieback. Could differences in the shape of the mouth's hard palate in people of different ethnicities influence small differences in the way we pronounce vowel sounds, and what's in a scorpion's toxin that targets the 'wasabi' receptor to stop mammals eating them?