Many Factors Combine to Allow Life on Earth

As we look at planet Earth and the factors that enabled us to be here, we quickly realize that our planet is very special. Here’s a short list: the long-term existence of a protective and oxygen-rich atmosphere; Earth’s axial tilt, stabilized by a single large moon; the ozone layer and the magnetic field, which jointly protect surface creatures from lethal cosmic radiation; plate tectonics, which regulates the levels of carbon dioxide and keeps the global temperature stable; the fact that...

 The Costs of Our Complicated Spelling System

A short list of the problems caused by the irregularity of English spelling starts with children being taught the alphabet and finding that it is a poor guide on how to reliably pronounce the written form or reproducing spoken words in writing. This leads inevitably to poor results in other areas of learning, as without literacy competency, no child can master other subjects. Apart from the loss in terms of peoples? working lives there are other costs associated with remedial classes, addit...