http://feedproxy.google.com/~r/sciencebl
http://scienceblog.com/?p=479893
With every breath we take, we inhale not only oxygen, but also a mix of gases. This mixture includes carbon dioxide and nitrogen, but also a gas called argon. Neon, the gas that illuminates the signs of all-night diners, is also in the mix. Our lungs recycle atmospheric argon and neon, in and out with […]
