zRadioactive+Decay

A laboratory experiment in Hungary has spotted an anomaly in radioactive decay that could be the signature of a previously unknown fifth fundamental force of nature, physicists say—if the finding holds up. http://www.scientificamerican.com/article/has-a-hungarian-physics-lab-found-a-fifth-force-of-nature/

Clocks in Rocks Radioactivity occurs because atomic particles are given off by some kinds of atoms. When an atom loses a proton the atom changes from one kind of atom to another. This change is called radioactive decay. In radioactive decay, the original radioactive atom is called a parent atom and the resulting atom after the decay is called a daughter atom. Radioactive decay happens like clockwork. Radioactive dating is when scientist use their knowledge of radioactive decay to try and determine the absolute age for a rock specimen.

2016 Update https://www.yahoo.com/news/chelsea-clinton-takes-to-twitter-to-knock-the-new-white-house-172242992.html