A general view shows The Shard skyscraper in central London on March 19 2015 A toxic air pollution cloud blew over Britain on Thursday causing...
{"Image ImageDescription": "A general view shows The Shard skyscraper (R) in central London on March 19, 2015. A toxic air pollution cloud blew over Britain on Thursday causing potential health problems for vulnerable people as the country struggles to meet its clean air targets. Smog blowing in from Europe has mixed with home-grown pollution to send air pollution levels soaring to nine on a scale of 10 in some parts of the country. AFP PHOTO / ALESSANDRO ABBONIZIO        (Photo credit should read ALESSANDRO ABBONIZIO/AFP via Getty Images)"}