Kristin Hayes discusses a new program called Dipity that allows users to create online timelines for free. With the free plan, users can create up to 3 timelines with 150 events each. Dipity also offers paid membership plans ranging from $4.95 to $99.95 per month. The author has created a timeline of important dates from the Ancient World to provide students historical context. Dipity timelines can include a variety of media like photos, videos, and links. The author believes Dipity is a useful program that can enhance learning across different subject areas.