Mikael Colville-Andersen speaks out against the culture of fear.
"The bicycle is hot all over the world"
For further reading here is the link to the European Cyclists Federation's page about helmets:
http://www.ecf.com/3500_1 and a link to their "Ask Me Why I Cycle Without a Helmet" campaign mentioned in the talk: http://www.ecf.com/3675_1 (you are free to download the pdf of the button and brochure)
An interview with the Dutch Cyclists Federation - Fietsersbond - on the subject: http://www.copenhagenize.com/2008/08/helmets-clever-dutch-and-arrogant-danes.html
A link to the helmet policy of the French FUBICY (bicycle users org) in English: http://www.fubicy.org/spip.php?article191
UK CTC: http://www.ctc.org.uk/DesktopDefault.aspx?TabID=4688