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Gas Stove Impact on Health Could be Worse than Secondhand Smoking, New Study

A man holds a mock cigarette near a mock grave put up on display to highlight the dangers of smoking and to create awareness among people during 'World No Tobacco Day' in Mumbai, India, 31 May 2023. EPA/DIVYAKANT SOLANKI
A man holds a mock cigarette near a mock grave put up on display to highlight the dangers of smoking and to create awareness among people during 'World No Tobacco Day' in Mumbai, India, 31 May 2023. EPA/DIVYAKANT SOLANKI
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Gas Stove Impact on Health Could be Worse than Secondhand Smoking, New Study

A man holds a mock cigarette near a mock grave put up on display to highlight the dangers of smoking and to create awareness among people during 'World No Tobacco Day' in Mumbai, India, 31 May 2023. EPA/DIVYAKANT SOLANKI
A man holds a mock cigarette near a mock grave put up on display to highlight the dangers of smoking and to create awareness among people during 'World No Tobacco Day' in Mumbai, India, 31 May 2023. EPA/DIVYAKANT SOLANKI

Using a gas stove can raise indoor concentrations of benzene, a cancer-linked chemical, to above what is found in secondhand smoking or even beyond levels found next to oil and gas facilities, a new study has found.

According to The Guardian, the research, which measured benzene levels in 87 homes in California and Colorado, found that gas and propane stoves frequently emitted benzene at rates well above ‘safe’ benchmarks set by the World Health Organization and the US Environmental Protection Agency (EPA).

Leaving a single gas hob on for 45 minutes raised benzene levels to above that found in secondhand tobacco smoking, or at the boundary of oil and gas plants.

According to the study, emissions are 10 to 25 times higher than that from electric coil stoves.

The researchers, from Stanford University, noted that even low doses of airborne benzene raise the risk of a variety of cancers, including lymphomas and leukemia, by damaging people’s bone marrow.

Elevated levels of benzene can linger for six hours throughout a house or apartment after a gas stove is turned off, the study reported.

A study from earlier this year found that one of eight childhood asthma cases in the US are linked to the use of gas stoves.

A research published last year also showed that emissions from gas stoves in US households have the same warming effect as half a million gasoline-powered cars.

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Monkeys Who Recently Died in Hong Kong's Zoo Had Been Infected with Melioidosis

Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
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Monkeys Who Recently Died in Hong Kong's Zoo Had Been Infected with Melioidosis

Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS

Nine monkeys who died in Hong Kong's oldest zoo in two days this week had been infected with an endemic disease, possibly after some digging work near their cages, officials said on Friday.

Secretary for Culture, Sports and Tourism Kevin Yeung said in a press briefing that the animals in the Hong Kong Zoological and Botanical Gardens contracted melioidosis and the disease later caused them to develop sepsis, according to The AP.

Yeung stressed that such infections typically occur through contact with contaminated soil and water and that there is generally no danger to humans from contact with infected animals or people.

“We're saddened by the passing of the nine monkeys,” he said.

Eight monkeys were found dead on Sunday, and another died Monday after displaying unusual behavior. The deceased animals were a De Brazza’s monkey, a common squirrel monkey, four white-faced sakis and three cotton-top tamarins — a species listed as critically endangered by the International Union for Conservation of Nature.

According to Hong Kong's Center for Health Protection, melioidosis is caused by the bacterium Burkholderia pseudomallei, which is widespread in soils and muddy water.

Yeung said the park conducted digging work to repair some irrigation pipes under the flower bed near the monkey cages in early October and that the deaths might be related to that.

He said the monkeys might have come into contact with the bacteria after the park's staff walked into their cages with possibly contaminated shoes. Another possibility is that some infected monkeys had close contact with other monkeys, he said.

“The incubation period for melioidosis in primates is about a week and this matched with the period after the soil digging work,” he said.

Edwin Tsui, the controller of the center, said the incident only happened in a single zone and its impact on Hong Kong residents would be very low.

Yeung on Monday held an urgent interdepartmental meeting about the deaths with the Leisure and Cultural Services Department, the Agriculture, Fisheries and Conservation Department and the Department of Health.

Another De Brazza’s monkey also displayed unusual behavior and appetite but offiicials said its condition remained stable on Friday.

The Hong Kong Zoological and Botanical Gardens — the oldest park in the former British colony — fully opened to the public in 1871. It is a rare urban oasis in the downtown Central district of the financial hub, which returned to Chinese rule in 1997.