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Tyson goes on to explain that Patterson's work in performing lead-free experiments directed him to investigate the sources for lead.Tyson notes how lead does not naturally occur at Earth's surface but has been readily mined by humans (including the Roman Empire), and that lead is poisonous to humans.
He would discover that the higher levels of lead were from the use of tetraethyllead in leaded gasoline, despite long-established claims by Robert A. Patterson would continue to campaign against the use of lead, ultimately resulting in government-mandated restrictions on the use of lead.The episode describes how science, in particular the work of Clair Patterson (voiced in animated sequences by Richard Gere) in the middle of the 20th century, has been able to determine the age of the Earth.Tyson first describes how the Earth was formed from the coalescence of matter some millions of years after the formation of the Sun, and while scientists can examine the formations in rock stratum to date some geological events, these can only trace back millions of years.A young couple, Peter and Ruby, are married with three children. First, this is the reverse order of the phases in North America; second, there appears to be about 3 to 5 days difference between the phases, not 1. By Arrangement with Hidden Track Music Published by Words & Music, a division of Big Deal Music, LLC See more » I was very interested in seeing Clea Du Vall's directorial debut.On a weekend trip a tight-knit group of friends confront them about their constant bickering and propose they divorce. See more » Let Me Burn Written by Rachel Williams Performed by Only You Courtesy of Hit City U. For years I have only known her as an actress (a very capable one) so I wanted to see what her skills behind the camera, and behind the typewriter if I must say, were.I’ve seen people fail when they try and add positive messages in their shows and try to say conscious stuff. Give me an album high/Give me an album low…I was on a high recording the whole album!
The reason they fail is because they are judging themselves while they say it… Sometimes writing about shaking your ass is what works for the vibe of that tune. Recording a three-piece horn section and percussion was new for me and a lot of fun. One thing I do really beat myself up over in the studio is capturing my voice properly.No one will take you seriously if you don’t feel confident and convinced with what you’re saying. Street performing is what taught me how to be authentic. I find it so hard to sound how I want to sound in such a boring stale studio atmosphere.There is no point throwing those conversations in to the show if you’re only doing it because you think you have to. Do you think conscious messages and lyrical positivity is something electronic music is lacking or could do more of? I don’t think I have a very good voice generally but I do know how to deliver a good performance in front of people…Tyson ends by noting that similar work by scientists continues to be used to help alert mankind to other fateful issues that can be identified by the study of nature.The episode's premiere on Fox brought a 1.4/4 in the 18-49 rating/share, with an audience of 3.74 million American viewers."The Clean Room" is the seventh episode of the American documentary television series Cosmos: A Spacetime Odyssey.