On December 8th, Mars Society leaders Chris McKay and Robert Zubrin gave plenary addresses to the United Nations Educational Scientific and Cultural Organization (UNESCO) conference in Paris devoted to mapping a vision for space exploration in the 21st century. Other speakers at the conference included Sir Arthur Clarke (who appeared via video), Hubert Reeves (an astrophysicist and widely published author sometimes called “the Carl Sagan of France”), SETI pioneer Jill Tarter, and David Southwood, the Director of Science for the European Space Agency. The inclusion of McKay and Zubrin in this distinguished company reflects the growing influence of the Mars Society as recognized spokesmen for the vision of human exploration and settlement of space.