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xAI Colossus pollution concerns in Memphis continue

Teslarati

Politicians in Memphis continue to debate about the pollution concerns arising from the xAI Colossus supercomputer. The NAACP and the Southern Environmental Law Center (SELC) have already expressed interest in filing a lawsuit against xAI over concerns related to air pollution stemming from its gas-powered turbines.

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Study finds São Paulo switch from ethanol to gasoline dropped local ozone levels by 20%, increased CO and nitric oxide concentrations

Green Car Congress

A study by a pair of researchers at Northwestern University found that when fuel prices drove residents of São Paulo, Brazil, to switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20%. Ozone levels are relatively high in São Paulo, with hourly concentrations above 75 and 125 µg m ?3

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Texas study finds PHEV use could increase ozone at night, decrease ozone during the day

Green Car Congress

A study by researchers at the University of Texas found that in general, use of plug-in hybrid electric vehicles (PHEVs) can lead to an increase in ozone during nighttime hours (due to decreased scavenging from both vehicles and EGU stacks) and a decrease in ozone during daytime hours.

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Study Links Springtime Ozone Increases Above Western North America to Emissions in Asia

Green Car Congress

Springtime ozone distributions for 1984, 1995–2008 in the mid-troposphere (3.0–8.0 Springtime ozone levels above western North America are rising primarily due to air flowing eastward from the Pacific Ocean, a trend that is largest when the air originates in Asia. The US EPA recently proposed new tougher ground-level ozone standards.

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Study Finds Asian Monsoon Carries Pollution Into the Stratosphere

Green Car Congress

The Asian monsoon circulation provides an effective pathway for pollution from Asia, India, and Indonesia to enter the global stratosphere, according to a new international study led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo. NCAR scientist William Randel, the lead author.

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Portable sensors enable monitoring of pollution on smart phones; inferring pollution maps with greater granularity

Green Car Congress

Boxes represent pollution reading locations during that window. Computer scientists at the University of California, San Diego have built a portable pollution sensors that transmit transmit their air quality readings to smart phones, allowing users to monitor air quality in real time. Nikzad et al. Click to enlarge. Click to enlarge.

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Hyundai Motor puts XCIENT Fuel Cell electric trucks into commercial fleet operation in California with $3.5M from EPA

Green Car Congress

The tractor’s hydrogen tank can hold 67 kg of hydrogen with the battery providing 72 kWh for a gross combined weight of 37,200 kg to deliver an average range of more than 450 miles per tank.

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