Old Weather: read old ships' logs and record their weather observations to improve current climate models

Old Weather is a citizen science project that asks its participants to parse out the contents of thousands of scanned pages from old nautical logbooks. Participants are asked to find the date, the location of the ship, and the weather observations made in the ship's log. These observations are being pieced together to create a better historical view of how climate works and how it has changed. These new, rare data points will help test and improve current climate models.

Old Weather

(via Kottke)