National Geographic Short Film Showcase
Witness dozens of different types of flowers unfurling in this stunning time-lapse video from filmmaker David de los Santos Gil. He used 5,000 out of 50,000 shots of his floral subjects for the final video, which was filmed over a period of nine months.
What Makes blossoms open and close? Here are two fascinating posts. The first is a good introduction to this fascinating topic. The second is more detailed.