How Do We Know How Old the Earth Is

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=7cFYPYaD4zQ

Head to www.acs.org/ncw30years to find out more about National Chemistry Week! • This week Reactions wonders how do we know how old the earth is? What's its age? Chemistry and science is how we know. • Since there’s no “established in” plaque stuck in a cliff somewhere, geologists deduced the age of the Earth thanks to a handful of radioactive elements. With radiometric dating, scientists can put an age on really old rocks — and even good old Mother Earth. For the 30th anniversary of National Chemistry Week, this edition of Reactions describes how scientists date rocks. • Find us on all these places: • Subscribe! http://bit.ly/ACSReactions • Facebook! / acsreactions • Twitter! / acsreactions • Instagram! / acsreactions • Tumblr! / acsreactions • Writer: • Sam Lemonick • Producer: • Sean Parsons • Executive Producer: • Adam Dylewski • Narrator: • Kyle Nackers • Co-Writer/Scientific consultant: • Darcy Gentleman, Ph.D. • • Scientific consultant: • Pieter Vermeesch, Ph.D. • References: • http://dx.doi.org/10.1144/GSL.SP.2001... • http://apps.usd.edu/esci/creation/age... • https://www.scientificamerican.com/ar... • https://geomaps.wr.usgs.gov/parks/gti... • http://abyss.uoregon.edu/~js/lectures... • http://www.geosociety.org/gsatoday/ar... • https://www.washingtonpost.com/news/s... • https://pubs.usgs.gov/gip/geotime/age... • Ever wonder why dogs sniff each others' butts? Or how Adderall works? Or whether it's OK to pee in the pool? We've got you covered: Reactions a web series about the chemistry that surrounds you every day. • • Reactions is produced by the American Chemical Society.

#############################

New on site