DNA Replication Visible for the First Time

An 11-second movie shows a single DNA molecule unwinding and rewinding as its genetic information is copied.

Community of Amateurs Discovers Planets Around Other Stars

Unlike the work of a single scientist, a large online community can combine the independent assessments of many non-experts, thereby gaining the “wisdom of crowds” in which the group opinion is equal to or better than that of any one expert (or the best computer algorithms currently available).