the CONTRAIL, developed by Brooklyn based studio GELARDI, is a small apparatus that attaches to any bike seat tube and applies a thin layer of chalk powder to the rear tire. the result is a streak of colour that traces wherever you ride. so awesome!

SPARK09 kicking off in shanghai on MARCH 28. it’s a full-day “ideas conference” featuring speakers culled from a variety of creative, non-profit, and commercial fields, addressing contemporary business, technology, and environment issues. check out the link for scheduling!