AUTHOR and adventurer Tim Jarvis will be speaking at the Gilbert White Museum in Selborne about his recent expedition in the footsteps of Polar explorer Sir Ernest Shackleton (1874–1922), during which Jarvis used the same basic equipment, clothing and technology as Shackleton. Tickets for the talk at 6.30pm, February 25 are £10. To book, see the website. www.gilbertwhiteshouse.org.uk