South Korea has been experiencing record-breaking heat over the past week, with the country seeing its hottest day in over 100 years. The temperature in Yangsan city reached 42.5 degrees Celsius, the highest since modern weather observations began in 1904. This heatwave has been going on for five days, with temperatures above 40 degrees Celsius. Authorities are warning people to stay indoors and avoid outdoor activities. Other cities like Daegu and Busan are also experiencing the heatwave, with temperatures consistently above 30 degrees Celsius. The Korea Baseball Organization had to cancel a game in Changwon city due to the weather. People are advised to stay home as much as possible. Over 20 regions in South Korea have received the new emergency heatwave warnings, which are sent out when temperatures reach 38 or 39 degrees Celsius. The Korea Meteorological Service is warning people to stop all outdoor activities and find a cool place to rest. The government is also checking on citizens in local areas to make sure everyone is safe in the heat. Did you know that heatwaves can have serious effects on human health? Heat can affect our ability to regulate body temperature, which can be especially dangerous for older people and young children. We can protect ourselves from heatwaves by staying in cool places, drinking plenty of water, and avoiding outdoor activities. We can also follow heatwave warnings and be prepared to follow local authorities' advice. The record-breaking heat in South Korea shows the effects of climate change, which can increase the frequency and intensity of heatwaves. It's essential to be prepared for heatwaves and to fight against climate change.