US States Under Air-Quality Alerts as Canadian Smoke Drifts South
More than a dozen U.S. states were under air-quality alerts on Wednesday as smoke from hundreds of wildfires burning in eastern Canada wafted south, casting a dull gray pallor over the skyline of New York and other big cities. Health authorities in 15 states from Vermont to South Carolina as well as Ohio and Kansas in the Midwest warned that fine matter in the atmosphere could exceed unhealthy levels and make breathing difficult for millions of residents. Washington, D.C., was also under an air-quality warning... Читать дальше...