Mother Nature: Google Earth, which in 2009 unveiled tools to visualize the effects of climate change, has now gone one better. The 3-D mapping program has now added data that will allow you to explore how much global warming has changed temperatures in your neighborhood or almost any other part of the world. The new data layer (which you must add after downloading the Google Earth program) comes from the University of East Anglia Climatic Research Unit (UEA CRU), which has provided information from 6,000 weather...