Kimberly-Clark and its Digital Innovation Lab, or D'Lab, has renewed its global call for open-source innovation to the consumer package goods category through its K-Challenge. The K-Challenge, now in its third year, invites the best start-up companies and entrepreneurs from around the globe to help identify potential "Tech for Life" solutions for the company and its well-known global brands such as Kleenex, Huggies, Depend and Kotex.