News FocusNewsmaker Interview

Imponderables Complicate Hunt For Intelligent Life Beyond Earth

See allHide authors and affiliations

Science  23 Apr 2010:
Vol. 328, Issue 5977, pp. 421
DOI: 10.1126/science.328.5977.421

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


Physicist Paul Davies argues for widening the Search for Extraterrestrial Intelligence (SETI) from radio messages beamed at Earth to beacons sweeping the galaxy, alien probes traveling through the solar system, and signs that viral DNA dispatched by a faraway civilization may have since become incorporated into the DNA of organisms on our planet. A professor at Arizona State University, Tempe, who serves as chair of the SETI Post-Detection Taskgroup, Davies spoke to Science recently about the past and future of SETI.