National Geographic : 2011 Jul
LETTERS Iwas gratified fi to see "Taming the Wild" include yaks among the domesticated species. Many people think that all yaks are wild. The wild yak is rarely found below 10,000 feet and is limited to a few remote regions of eastern Asia. By comparison, the 12 to14 million domesticyaks can be found in a remarkable range of environments from Tibet to Texas and at latitudes from Sweden to New Zealand. Perhaps researchers trying to isolate the domes- tication gene should consider yaks, since it does not sound as if breeding stocks of domestic foxes will become widely available---or affordable---anytime soon. And when they do isolate the gene, what next? Piebald lions? Short-tailed tigers? Floppy-eared bears? Oh, my! DIANNE B. LATONA Everson, Washington Why anyone would seek to evolve a "perfect pet" I do not know, because that has already been done. It's called the dachshund. ROBERT L. OWENS Cole Camp, Missouri Age of Man f I was very intrigued by the chart of contributing factors (population, affluence, fl and technology) to the human impact on our planet, and I found the accompanying mathematical formula, I=P×A×T,tobecleverifnotdiscour- aging. However, I would like to propose a fourth factor, education---and useit as a divisor in the formula to mitigate the effect of the multipliers. Neither affluence fl nor technology should be inherently damaging on a large scale. I believe that their lasting effects have more to do with how we use theseresources. And as for population, that too can be mitigated with a good dose of education. RICK WHITSON Salt Lake City, Utah ® SERIOUS SHOOTERS HAVE NEVER BEEN KNOWN TO TRAVEL LIGHT. UNTIL NOW. THE INCREDIBLE NIKON COOLPIX P7000. Nothing matters more to serious shooters than image quality. So when it comes to a smaller camera, only one measures up: the Nikon COOLPIX P7000, with a large 1/1.7" CCD sensor, RAW shooting capability, the option of full manual control, NIKKOR ED glass, HD Movie, Nikon Speedlight compatibility and much more. It's the first good reason, ever, to shoot with something other than your D-SLR. For more, go to www.nikonusa.com/P7000 Nikon® and P7000TM are registered trademarks of Nikon Corporation. ©2011 Nikon Inc.