#underground-fires

#underground-fires

The city has been conducting prescribed burning for about two decades, and cities across North America perform the burns annually to support fire-dependent ecosystems.

Researchers have known since at least 2008 that wildfires can create chromium-6, but a new study, published in the journal Environmental Science and Technology in November, is the first to report details such as how long it might persist in groundwater.

We created Earth in Action to provide a lens into what's happening on our planet, as it happens. Whether it's something typical, like the current air temperature, or an extreme event like a major dust storm, we wanted to provide an opportunity for people to see them.

"So whenever people think about hot weather, they always talk about the temperature," he says. "There's two issues with that. First of all, most people don't realise that the temperature is measured in the shade. So if you're in direct solar radiation, the amount of heat stress you're exposed to is much greater as it will stress your body out a lot more."

A potent neurotoxin capable of causing lifelong damage to the lungs, brain, skin and other organs, mercury is strictly regulated worldwide. Children, in particular, can suffer severe developmental impairment when exposed. A trace element that occurs naturally in rocks such as limestone, as well as in coal and crude oil, mercury remains locked underground for millions of years, largely entering the ecological cycle through human activity.

Tucked into the ridges overlooking California's San Francisco Bay and against an expansive nature area, the house Thouati and his wife have owned for 30-some years sits in one of the highest wildfire-threat areas in the state. A scientist with a penchant for diving deep, he poured into the research. Hundreds of articles later, he said, it became clear I had to swallow my pride.

The remaining question, though, was where all this methane was coming from in the first place. Throughout the pandemic, there was speculation that the surge might be caused by super-emitter events in the oil and gas sector, or perhaps a lack of maintenance on leaky infrastructure during lockdowns. But the new research suggests that the source of these emissions was not what many expected. The microbial surge

Hazardous conditions along the US southern border have prompted health officials to warn Americans to stay indoors with the windows shut. The US Environmental Protection Agency (EPA) has issued its highest level of alert about the air quality over Texas and New Mexico, calling the pollutants currently in the air over a 150-mile swath of land 'hazardous' to human health.