Extreme heat helped push as much as 26 percent of the contiguous United States into drought in July 2011. This image shows the impact on plants throughout the month.
Nearly all of California was in a state of extreme drought at the end of January 2014. Forests and farms clearly showed the effects in satellite measurements of vegetation.
Hot, dry weather from January through March 2007 wilted crops in southern Africa. The impact of the drought on vegetation throughout southern Africa is illustrated in this image.