AUT Professor Allan Blackman joined Christina live in studio for Dear Science. This week, they discussed light therapy as a cancer treatment, the origin of the Black Death, and carbon and nitrogen levels in the sun, as well as a quick detour into astrology and marmots.

Aneeka had her weekly chat with the National Party's Dr. Shane Reti, where they discussed emergency department wait times and Matariki.

Jack also spoke to Dr Dan Hikuroa, a Māori Studies lecturer from the University of Auckland, about Matariki.

Christina spoke to Alejandra Jaramillo Aristizabal, a University of Auckland education student originally from Columbia, about the recent presidential election that saw a left-wing president elected for the first time in the country's history.