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.
http://www.ted.com With help from some surprising footage, Derek Sivers explains how movements really get started. (Hint: it takes two.) TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes.