Health

A poliovirus variant has been detected in six wastewater samples in Khan Younis and Deir Al Balah, two cities in southern and central Gaza.  In a Facebook post on Friday, the Gaza Health Ministry called it a “health disaster.” The testing, done in co-ordination with UNICEF, found the presence of Type 2 poliovirus, which causes the polio disease. Officials in Gaza said the presence of the virus was caused by the severe congestion of people in small areas and the scarcity of available water in the strip. The samples were taken from sewage water that runs between densely populated areas and the tents of displaced people.  Polio is a highly infectious disease that can infect the central nervous system and damage nerve cells that activate muscles. However, in some cases, it causes no symptoms and goes undetected. No one in Gaza has been treated for polio-related symptoms yet, the WHO told The Associated Press. Similarities to Egyp...

The heat wave that left more than 100 million people sweating across the eastern U.S. in June 2024 hit so fast and was so extreme that forecasters warned a flash drought could follow across wide parts of the region. Prolonged high temperatures can quickly dry soils, triggering a rapid onset drought that can affect agriculture, water resources and energy supplies. Many regions under the June heat dome quickly developed abnormally dry conditions. The National Oceanic and Atmospheric Administration’s hazard outlook map shows flash drought warnings in yellow and areas forecast to have a high risk of excessive heat in early July in red. NOAA Climate Prediction Center The human impacts of the heat wave have also been widespread. In Ohio and Pennsylvania, emergency room visits for heat-related illnesses surged. Several Massachusetts schools without air conditioning closed to protect kids and teachers...

Flint, Michigan, made headlines in 2015 when tests revealed dangerously high lead levels in its drinking water. The city had switched its water supply to the Flint River a year earlier, and corrosive water had damaged aging lead pipes, exposing thousands of people to lead contamination. The result was a human health crisis that residents are feeling the effects of to this day. And Flint was only the tip of the iceberg. The EPA estimates that 9.2 million service lines that deliver drinking water to U.S. homes and businesses are made of lead. The federal government considers replacing these lead pipes a top priority and has launched a variety of initiatives to help, including the 2021 Infrastructure Law, which committed US$15 billion over five years to lead pipe replacement. The EPA is now proposing to require the removal of lead pipes across the U.S. within 10 years. The agency has been silent, however, regarding what should replace lead....

The Caribbean’s sandy beaches, clear turquoise water and vibrant coral reefs filled with an amazing variety of sea creatures have long been the pride of the islands. The big three – sun, sea and sand – have made this tropical paradise the most tourism-reliant region in the world. But now, all of that is under threat. The explosive growth of a type of seaweed called sargassum is wreaking havoc on economies, coastal environments and human health across the islands. I study the intersection of critical infrastructure and disasters, particularly in the Caribbean. The sargassum invasion has worsened since it exploded in the region in 2011. Forecasts and the seaweed already washing up suggest that 2024 will be another alarming year. Sargassum levels were already high around many eastern Caribbean islands in late May 2024. Forecasters expect increasing sargassum washing up in June on many of the islands and in the Gulf of M...

Dozens of wildfires are burning across Canada in May 2024 and sending unhealthy smoke blowing into the northern U.S. again. At the same time, the southeastern U.S. is getting smoke from Mexico, where drought conditions have been fueling fires. Last year, Canada’s record 2023 wildfire season introduced millions of Americans across the Midwest and northeastern states to the health hazards of wildfire smoke, with air quality alerts that reached levels never seen there before. Professional baseball games were postponed and the skies in New York City turned orange with haze, at times exposing millions of people to the worst air quality in the world. In some regions, the smoke hung on for days. The pressing question on many people’s minds: “Is this the new normal?” From our perspective as air quality scientists, we think the answer is likely “yes.” Global warming means more fires Hotter, drier conditions, coupled with dry grasses and underbrush...