Science

Veronika Meduna joins a group of scientists scouring every corner of Otari Wilton's Bush as part of a 24-hour Bioblitz. The event was part of the bush reserve's centenary celebrations. www.otari100.org.nz

Environment

Dean Williams talks to Anthony Fowler, at the University of Auckland, about deciphering climate information from tree rings in timber from Colonial Era houses.

Victoria University lecturer Sean weaver explains a new initiative to protect forests in Vanuatu and to reduce the island nation's carbon emissions.

Health

Louise Wallace talks Sue Young, a specialist nurse at Auckland Hospital, who has received a Churchill Fellowship to travel overseas to study pain relief methods.