Age dating contamination
Carbon-14 (C-14) dating of multiple samples of bone from 8 dinosaurs found in Texas, Alaska, Colorado, and Montana revealed that they are only 22,000 to 39,000 years old.Members of the Paleochronology group presented their findings at the 2012 Western Pacific Geophysics Meeting in Singapore, August 13-17, a conference of the American Geophysical Union (AGU) and the Asia Oceania Geosciences Society (AOGS).Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. The show was produced by The Chedd-Angier-Lewis Production Company in association with Scientific American magazine, and presented on PBS by Connecticut Public Television.The fluctuation of the amount of C-14 in the atmosphere over time adds a small uncertainty, but contamination by "modern carbon" such as decayed organic matter from soils poses a greater possibility for error. Thomas Seiler, a physicist from Germany, gave the presentation in Singapore.You can also try our keyword search or browse the Programs A-Z menu.
Visit the PBS Store to purchase DVD collections of the show, or you can find archived episodes and transcripts of Scientific American Frontiers at To find similar content on PBS.org, explore science-related television created by NOVA or Nature.Carbon-14 is considered to be a highly reliable dating technique.It's accuracy has been verified by using C-14 to date artifacts whose age is known historically.
Since dinosaurs are thought to be over 65 million years old, the news is stunning - and more than some can tolerate.
After the AOGS-AGU conference in Singapore, the abstract was removed from the conference website by two chairmen because they could not accept the findings.