In some instances, an area may experience more than 250 mm of precipitation annually, but is considered a desert climate because the region loses more water via evapotranspiration than falls as precipitation (Tucson, Arizona and Alice Springs, Northern Territory are examples of this).
In contrast, 1  TED-style talks are personal. The only reason to give a TED talk is that you feel passionately about something, and your sense of purpose creates an energy boost for both you and your audience. 2  TED talks often take us on a journey.
Are you new to Mac? Just got your first Apple Computer? In this one video you will learn everything you need to get up and running. David A. Cox is an award winning teacher who specializes in teaching technology to the non tech-savvy. His service, TechTalkAmerica.com (formerly PC Classes Online) is a free service that allows anyone to learn how to master their Mac, PC, iPhone, or iPad from the comfort of their own home. Tech Talk America is now a free public service.