In 2004, Rothblatt launched the Terasem Movement, a transhumanist school of thought focused on promoting joy, diversity, and the prospect of technological immortality via mind uploading and geoethical nanotechnology. Through a charitable foundation, Leaders of this school convene publicly accessible symposia, publish explanatory analyses, conduct demonstration projects, issue grants, and encourage public awareness and adherence to Terasem values and goals. The movement maintains a "Terasem Island" on the Internet-based virtual world Second Life, which is currently composed of two sims, which was constructed by the E-Spaces company.