City dwellers have long had to contend with smog—that ugly haze that hangs over urban areas—as a result of emissions-producing human activities as diverse as manufacturing, mowing the lawn, driving cars, and even cooking. ⌘ Read more
City dwellers have long had to contend with smog—that ugly haze that hangs over urban areas—as a result of emissions-producing human activities as diverse as manufacturing, mowing the lawn, driving cars, and even cooking. ⌘ Read more