And then either later in this video or in future videos we'll talk about how it's actually used to date things, how we use it actually figure out that that bone is 12,000 years old, or that person died 18,000 years ago, whatever it might be. So let me just draw the surface of the Earth like that. So then you have the Earth's atmosphere right over here. And 78%, the most abundant element in our atmosphere is nitrogen. And we don't write anything, because it has no protons down here. And what's interesting here is once you die, you're not going to get any new carbon-14. You can't just say all the carbon-14's on the left are going to decay and all the carbon-14's on the right aren't going to decay in that 5,730 years.It's just a little section of the surface of the Earth. And that carbon-14 that you did have at you're death is going to decay via beta decay-- and we learned about this-- back into nitrogen-14. So it'll decay back into nitrogen-14, and in beta decay you emit an electron and an electron anti-neutrino. But essentially what you have happening here is you have one of the neutrons is turning into a proton and emitting this stuff in the process. So I just said while you're living you have kind of straight-up carbon-14. What it's essentially saying is any given carbon-14 atom has a 50% chance of decaying into nitrogen-14 in 5,730 years.CPD spokesman Anthony Guglielmi declined to comment on what Lathem said in the video, though CNN reported Lathem confessed to committing “the biggest mistake of my life,” and said the message had been encrypted. Lathem, a leading expert on the pathogens that cause the plague who had been on the Northwestern faculty since 2007, has not been seen since Cornell-Duranleau’s body was discovered in Lathem’s 10th-floor apartment on July 27.A Cook County judge on Monday issued an arrest warrant for Lathem and Andrew Warren, a 56-year-old pension and payroll officer at a branch of Oxford University in England.There are also various off-shoots of with microsites for gay and lesbian dating, Asian dating, Christian dating and Polish dating. The experts say: For those nervous about dating, this site puts the control in your fingertips allowing you access to thousands of profiles and the ability to chat to potential dates at the rate which works for you.The love-gods at match also arrange singles events and provide online dating advice. It is well known and therefore attracts a wide demographic, allowing you to widen your dating pool or limit it with their advanced matching facility. Lovestruck helps you target potential partners according to location and it covers many of the major cities across the world.As the week-long search for a Northwestern University professor suspected in a gruesome River North stabbing continued Friday, twists added to a murder story that has captivated a city that has seen more than 400 killings already this year.
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