Models painted in camouflage colours to blend in with the background pose for Chinese artist Liu Bolin's artwork “Dongji”, or Winter Solstice, on the second day after China's capital Beijing issued its second ever “red alert” for air pollution, in Beijing, China, December 20, 2015. In this artwork, Liu wants to express his concerns about China and its people, including air pollution problem, Liu told Reuters. (Photo by Kim Kyung-Hoon/Reuters)

Popocatepetl volcano spews incandescent material as seen from Paso de Cortés on May 23, 2023 in Amecameca, Mexico. The second highest volcano in the country increased its activity while Mexican authorities raised the alert to yellow phase 3. Popocatepetl volcano caused the fall of ashes in different municipalities in Puebla, Estado de Mexico and Mexico City. Mexican army has spread forces as a preventive measure while the 3 levels of government are in coordination to observe the activity of the volcano and the situation in the surroundings. (Photo by Cristopher Rogel Blanquet/Getty Images)

A firefighter is seen next to flames while working to extinguish a wildfire burning in Gondomar, northern Portugal on July 29, 2025. Almost 2,000 firefighters battled on July 29, 2025 to contain forest blazes across Portugal that have led to almost the whole country being put on high alert for fires. Ten major fires blazed with two in the north and three in the centre of the country causing most concern. (Photo by Carlos Costa/AFP Photo)

An anti-lockdown activist dressed as Father Christmas is arrested in Grosvenor Square during a demonstration in London, England, on November 28, 2020. London is to return to “Tier 2” or “high alert” covid-19 restrictions once the current England-wide coronavirus lockdown ends next Wednesday. All three of the tiers, assigned to local authorities across England, have been strengthened since the lockdown began on November 5, however, with the main impacts to be felt by the hospitality sector. (Photo by Mark Thomas/i-Images)

A woman tries to hold an umbrella amidst gusty winds as Cyclone Michaug is expected to make landfall on the eastern Indian coast, at Foreshore Estate Beach, in Chennai, India, 03 December 2023. The Indian Meteorological Department has issued a red alert for heavy rains in Chennai as the cyclonic storm, “Cyclone Michaung” is anticipated to make landfall between Andhra Pradesh's Nellore and Machilipatnam on December 05. (Photo by Idrees Mohammed/EPA/EFE)

Filipino villagers escape to a safe area as the Mayon Volcano erupts anew in the town of Daraga, Albay province, Philippines, 23 January 2018. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) agency on 22 January raised the alert level for the Mayon Volcano amid fears of a bigger eruption over the next few hours or days. (Photo by Francis R. Malasig/EPA/EFE)

A villager run as Mount Sinabung erupt at Sigarang-Garang village in Karo district, Indonesia's North Sumatra province, February 1, 2014. Four people died and more than 28, 000 villagers have been evacuated since authorities raised the alert status for the volcano to the highest level in November 2013, local media reported on Saturday. (Photo by Reuters/Stringer)

Childrens play in the waterlogged streets following heavy rain in Bangalore, India, 21 October 2024. India Meteorological Department (IMD), weather department issued an orange alert amid intermittent rain. Due to heavy rains in Bangalore, schools are shut down today, and private offices have asked their employees to work from home, and several trees are uprooted. This comes owing to a well-marked low-pressure area over central parts of the south Bay of Bengal. (Photo by Jagadeesh N.V./EPA)