Are Alien Civilizations Sending Signals in Bacteria? with Dr. Robert Zubrin

Alien space probes? Are there alien civilizations? The search for extraterrestrial intelligence has mainly focused on searching for radio signals. However, John Michael Godlier spoke with Dr. Robert Zubrin about a new theory he proposes which posits that alien space probes would be seeding life throughout the universe using bacteria. Are alien civilizations sending signs? If so, Dr. Zubrin proposes that we search for these microbes, a form of deep space communication, within our own solar system on Mars,