In December 1952, air in __________ became stagnant and cloud cover blocked incoming solar radiation.LondonRussiaPennsylvaniaRomania

In December 1952, air in London became stagnant and cloud cover blocked incoming solar radiation. This phenomenon contributed to what is now referred to as the Great Smog of 1952. During this event, a combination of industrial pollution, unusual weather patterns, and an anticyclone caused the air quality in London to deteriorate severely. The smog lasted for several days, leading to health crises as thousands suffered from respiratory problems.

The stagnant air trapped pollutants close to the ground, and the resulting visibility was drastically reduced. The Great Smog highlighted the effects of air pollution and prompted significant changes in environmental regulations in the UK, leading to initiatives aimed at improving air quality. It remains a pivotal moment in environmental history, exemplifying the urgent need for policies addressing pollution.