ENCORE They’re heeeere! Yes, aliens are wreaking havoc and destruction throughout the land. But these aliens are Arizona beetles, and the land is in California, where the invasive insects are a serious problem.
And what of space-faring aliens? We have those too: how to find them, and how to protect our planet – and theirs.
From Hollywood to SETI’s hi-tech search for extraterrestrials, aliens are invading Are We Alone?
Guests:

Paul Davies - Physicist and author of The Eerie Silence: Renewing Our Search for Alien Intelligence
Frank Drake- Senior Scientist, SETI Institute
Andy Ihnatko - Journalist and tech blogger
Margaret Race - Biologist and Principal Investigator at the SETI Institute
Margaret McLean - Director of bioethics at the Markkula Center for Ethics, Santa Clara University
Mark Hoddle - Biological Control Specialist at the University of California, Riverside
Vanessa Lopez - Graduate student in entomology, University of California, Riverside

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