"Sir David Attenborough interview: The one question about life that still baffles him". Interview with Jenn Selby, www.independent.co.uk. January 28, 2015.
"David Attenborough: 'I have been in a vehicle that was charged by a rhinoceros, and that was tiresome'". Interview with Kate Kellaway, www.theguardian.com. October 30, 2010.