China's landlocked capital of 20 million people has experienced record-breaking pollution over the last few days.
The South China Morning Post reported that visits to Beijing Children's Hospital hit a five-year high, with more than 7,000 patients a day.
Bloomberg News found that heart attacks roughly doubled since Friday at Peking University People's Hospital. (H/t Shanghaiist).
Kids were forced to stay home from school as Beijing authorities enacted unprecedented measures to combat the thick, nostril-burning layer of grossness.
They even banned the use of certain government vehicles. The "fog," as it is euphemistically known in China, is set to continue for a number of days and has prompted an unusual display of openness from the country's state-controlled press, calling for urgent action.
Climate Desk breaks down exactly what's in the air.