NSF has awarded $1 million to build a comprehensive timetree of life, the cornerstone of biological diversity. Led by Blair Hedges and Sudhir Kumar (Bio), it is a collaborative effort with Zoran Obradovic (CIS) and Caryn Babaian (Bio) to build the largest timetree of life and deliver it via the timetree.org website. The general public and experts can query the website to obtain the divergence time of any two species, a timeline, and a timetree of any group of species.