Health

A study of 202, 678 heart attack deaths in Jiangsu province, China, from 2015 to 2020 found that days that had extreme heat, extreme cold or high levels of  PM_2.5 air pollution were significantly associated with the risk of death from a heart attack, especially in women and older adults.

Following the serious air quality issues caused in the US by Canadian wildfires over the past few weeks, many cities decided against holding a tradition 4th July firework display, opting instead for drone light shows.