Age of the Earth research. Most geological samples from Earth are unable to give a direct date of the formation of Earth from the solar nebula because Earth has undergone differentiation into the core, mantle, and crust, and this has then undergone a long history of mixing and unmixing of these sample reservoirs by plate tectonics, weathering and hydrothermal circulation. All of these processes may adversely affect isotopic dating mechanisms because the sample cannot always be assumed to have remained as a closed system, by which it is meant that either the parent or daughter nuclide (a species of atom characterised by the number
What the Bleep Do We Know!? Theater in Portland, Oregon, where it was filmed. Within several weeks, the film had appeared in a dozen or more theaters (mostly in the western United States), and within six months it had made its way into 200 theaters across the US. According to the makers of the film, "Bleep" is an expurgation of "fuck". William Arntz has referred to the film as "WTFDWK" in a message to the film's street team. The Institute of Noetic Sciences, a New Age research organization that "explores phenomena that do not necessarily fit conventional scientific models", has supported "What the Bleep Do We