Inadvertently, the human page turner, that fallible and sometimes reviled third party onstage, has been absent from most of Haywoodâs recent performances, a consequence of the wireless age. The advantages are obvious: The iPad is portable, discreet, always well-rested.
He measured the half-life of Carbon-14 to be about 5,568 years. However after about 50,000 years there is so little Carbon-14 left in the specimen that it is very hard, almost impossible, to calculate its age. (Van Der Merwe) Libby ran many tests on items where the age was known, or estimated by other means.
The change in global climate, according to scientific consensus, is a result of cumulative carbon pollution over the past 200 years, or since the Industrial Revolution began. There has been an escalation of this pollution in the past 20 â 40 years due to increased population and industrial activity. The first goal is to reduce carbon emissions. If we can do this, there should be a commensurate decrease in the accelerating rate of climate change.