Sitting in the Silence: In the Mountains of Northern California, an Art Exhibition for Aliens.

The article focuses on the search by experts for extraterrestrial intelligence. Topics include the first attempt to listen for Earth's interstellar neighbors, the work of philosopher Jonathon Keats with the Desert Laboratory at the University of Arizona to find ways to preserve culinary traditions that will be ravaged by climate change, and an algebraic formula formalized by Frank Drake for n, the total number of alien civilizations in this galaxy with whom humans might make contact.