This week in science news, the team explore underwater landslides, space tourism, COVID-19 delta and vaccine effectiveness. Then, Joshua Osowicki from the Murdoch Children's Research Institute talks about strep infections; and it's time to do an annual check-in with Mae and Louise Driscoll, who both live with CVID: (Common variable immune deficiency); and Graci finishes off with the science of tattoos. With presenters Drs Shane, Ailie, Stacey, and Anu.

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