Metro Vancouver wants Lower Mainland residents to not put their Halloween pumpkins out with the trash, where they'll generate methane, a greenhouse gas. The regional government suggests you:
chop up your pumpkin and put it in your composter;
dig a shallow trench in your garden and drop in shredded pumpkin chunks, then fill it back in;
add your pumpkin to your yard trimmings container for regular curbside pickup.
For tips on how to compost, visit your municipal website or www.metrovancouver.org (check out the "Food Recycling/ Composting" pages or, for a direct link, go to http://bitly.com/MVFood).
As well, a video story titled "Why Compost?" is posted at http://bcove.me/kcqbopx6 and another, "Pumpkin Smashers," is posted at http://bcove.me/j132bu1s.