SHADE

Hiding from the heat.

Excessive heat kills more people every year than floods, hurricanes, and tornadoes combined. The solution to this international concern, says environmental journalist Bloch, is a simple one: more shade. But simple doesn’t mean easy. Putting even a small dent in the amount of heat absorbed by the earth involves a multinational commitment to complex changes in the way we design not only cities but also neighborhoods, public spaces, and homes. Bloch begins each chapter with a story capturing various ways that lack of shade affects segments of the world’s population, including passengers at bus stops in Los Angeles, travelers to desert oases, and residents of big-city high-rises, all seeking relief from the heat. The challenges are many: Homeowners want windows for light, property developers find it cheaper to rely on air conditioning to cool buildings, and city planners have a hard time justifying the cost of barriers and shade trees in public spaces. Ideas to reduce excessive heat range from planting trees to brightening clouds to solar-radiation management to using space shades and other tactics to reduce the amount of sunlight the earth absorbs. The simplest option is also the most obvious. As Bloch writes, “It’s understandable that Americans have forgotten how sweet shade can be. As air-conditioning has become the default method of cooling down, the shade tree has disappeared from the lexicon….There is still no technology known to man that cools the outdoors as effectively as a tree.” Bloch explores a catalog of possible solutions; none is examined in great depth, but the scope shows why this problem is not easily solved and presents an urgent need for continued conversation.

A thoroughly documented and thought-provoking book, certain to spark attention and discussion.