Ceo of media health on helping employees navigate a change of life. Thats this week on press here. Good morning, everyone. Im scott mcgrew. If you looked at earth from space there would be no obvious sign anyone lived here. Its just a Big Blue Marble or a pale blue dot, but if you look closely enough you might start to see the stuff we humans leave lying around, the carcass of an Apollo Lander on the moon, a deep space probe or all those satellites that weve put into orbit. Astronomers call those techno signatures and my first guest is the Principal Investigator in a nasafunded effort to find techno signatures on other words to look for aliens, dr. Adam frank is an astro physicist and his new book little book of aliens talk about astro signatures. First, i want to understand techno signatures and you may remember the movie contact that does a great job of how video waves propagate out in the space and weve been looking for signals from other planets looking for that in decades and tech
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