Floods driven by climate change are raising the danger of long-banned toxic chemicals resurfacing in rivers, soil, and food chains, according to a new UN Environment Programme (UNEP) report.
The Frontiers 2025 report highlights floods as a growing threat that can stir up harmful substances buried in sediments and infrastructure over decades or centuries. These toxins risk spreading across agricultural lands, urban areas, and freshwater sources, endangering both human health and ecosystems.
“Floodwaters can remobilize chemicals thought safely buried,” the report said, warning that increasing extreme weather linked to global warming is amplifying this risk.
Experts note many of these persistent chemicals, banned under international agreements like the 2006 Stockholm Convention, remain trapped in riverbeds, landfills, and contaminated sites. Flooding events can release them back into the environment, allowing them to bioaccumulate in wildlife and humans.
Low-lying and coastal populations are particularly vulnerable, as more people worldwide settle in flood-prone areas. UNEP officials urge governments to strengthen water management, environmental monitoring, and emergency planning to address these risks.
Industrial toxins such as persistent bioaccumulative and toxic substances (PBTs), per- and polyfluoroalkyl substances (PFAS), and asbestos are among the dangerous chemicals that floods may release. Despite bans and restrictions, these compounds continue to appear in water systems globally, posing long-term health threats.
UNEP experts also highlight the urgent need to improve early warning systems and monitoring capabilities, especially in vulnerable regions, to better manage and mitigate the impact of chemical pollution linked to climate-driven flooding.
“Preventing contamination is far more cost-effective than dealing with its aftermath,” the report stresses, calling for greater policy attention to these emerging environmental challenges.
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U.S. President Donald Trump’s Middle East envoy Steve Witkoff and Trump’s son-in-law Jared Kushner visited the USS Abraham Lincoln aircraft carrier in the Arabian Sea on Saturday after completing a round of talks with Iran.
U.S. and Ukrainian negotiators have discussed an ambitious goal of reaching a peace agreement between Russia and Ukraine by March, though the timeline is widely viewed as unrealistic due to deep disagreements over territory, according to multiple sources familiar with the talks.
The U.S. military said it has carried out a strike Thursday (5 February) on a vessel allegedly engaged in narco-trafficking in the Eastern Pacific, according to the U.S. Southern Command (SOUTHCOM), killing two people.
The U.S. military said Washington and Moscow have agreed to reestablish high-level military-to-military dialogue following talks in Abu Dhabi. The move could signal a step toward normalising some ties between the United States and Russia.
Storm Leonardo hit Spain and Portugal on Tuesday, forcing more than 11,000 people from their homes, as a man in Portugal died after his car was swept away by floodwaters and a second body was found in Malaga.
Winter weather has brought air travel in the German capital to a complete halt, stranding thousands of passengers as severe icing conditions make runways and aircraft unsafe for operation and force authorities to shut down one of Europe’s key transport hubs.
An attacker opened fire at the gates of a Shiite Muslim mosque in Islamabad on Friday before detonating a suicide bomb that killed at least 31 people in the deadliest assault of its kind in the capital in more than a decade.
Start your day informed with AnewZ Morning Brief: here are the top news stories for the 6th of February, covering the latest developments you need to know.
The U.S. and China are locked in a growing struggle over critical minerals, the materials that power everything from electric vehicles and microchips to missiles and advanced radar systems, as both sides move to secure control over supply chains that underpin economic and military power.
Several avalanches struck northern Italy on Saturday, killing at least three people, as rescue officials warned the death toll could rise with unstable conditions persisting across the Alps.
U.S. President Donald Trump’s Middle East envoy Steve Witkoff and Trump’s son-in-law Jared Kushner visited the USS Abraham Lincoln aircraft carrier in the Arabian Sea on Saturday after completing a round of talks with Iran.
Russian forces attacked Ukraine’s energy infrastructure overnight on Saturday, marking the second such strike in less than a week, according to Ukrainian authorities.
Swiss skier Franjo von Allmen and Norway’s Anna Odine Stroem claimed gold medals on Saturday, marking standout performances on the first full day of competition at the Milano Cortina 2026 Winter Olympics.
Police in riot gear pushed toward a group of protesters who launched fireworks, flares and smoke bombs during a demonstration in Milan on Saturday, as the city hosted events on the first full day of the Milano Cortina Winter Olympics.
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