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This Is How The “Earth Hour 2019” Got Celebrated Across The Globe

“We are the first generation to know we are destroying the world,” WWF said. “And we could be the last that can do anything about it.”

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Earth Hour
Earth Hour 2019. VOA

The Eiffel Tower, the Empire State Building, the Sydney Opera House, the Brandenburg Gate, the Acropolis and many more iconic landmarks went dark at 8:30 p.m. local time, Saturday night, for Earth Hour, an annual call for local action on climate change.

Earth Hour is the brain child of the World Wildlife Fund.

“By going dark for Earth Hour, we can show steadfast commitment to protecting our families, our communities and our planet from the dangerous effects of a warming world,” said Lou Leonard, WWF senior vice president, climate and energy. “The rising demand for energy, food and water means this problem is only going to worsen, unless we act now.”

Earth
WWF said Earth’s “rich biodiversity, the vast web of life that connects the health of oceans, rivers and forests to the prosperity of communities and nations, is threatened.” VOA

Individuals and companies around the world participated in the hour-long demonstration to show their support for the fight against climate change and the conservation of the natural world.

WWF said Earth’s “rich biodiversity, the vast web of life that connects the health of oceans, rivers and forests to the prosperity of communities and nations, is threatened.”

Earth
“The rising demand for energy, food and water means this problem is only going to worsen, unless we act now.” Pixabay

The fund also reports that wildlife populations monitored by WWF “have experienced an average decline of 60 percent in less than a single person’s lifetime, and many unique and precious species are at risk of vanishing forever.”

Also Read: The Big Question in U.S.; Does Stopping Global Warming Mean Wrecking The Economy?

“We have to ask ourselves what we’re willing to do after the lights come back on,” Leonard said. “If we embrace bold solutions, we still have time to stabilize the climate and safeguard our communities and the diverse wildlife, ecosystems and natural resources that sustain us all.”

“We are the first generation to know we are destroying the world,” WWF said. “And we could be the last that can do anything about it.” (VOA)

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Here’s Why Automative Technology May Have Adverse Impact on Climate, Public Health

climate trade-off is much different on the regional scale, especially in areas with high vehicle densities

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Technology
While automative technology is credited with boosting fuel efficiency and reducing CO2 emissions, GDI engines produce more black carbon aerosols than traditional port fuel injection engines. Pixabay

New automotive technology that promises enhanced fuel efficiency may have a serious downside, including significant climate and public health impacts, a new study suggests.

The gasoline direct injection (GDI) engine is one of the most prominent technologies car manufacturers adopted to achieve the fuel economy and carbon dioxide emission goals established in 2012 by the US Environmental Protection Agency.

While this technology is credited with boosting fuel efficiency and reducing CO2 emissions, GDI engines produce more black carbon aerosols than traditional port fuel injection engines, according to the study published in the journal Environmental Science and Technology.

“Even though emissions from gasoline vehicles constitute a small fraction of the black carbon in the atmosphere, the vehicle emissions are concentrated in regions with high population densities, which magnifies their effect,” said study researcher Rawad Saleh, Assistant Professor at University of Georgia in the US.

The market share of GDI-equipped vehicles increased from 2.3 per cent in model year 2008 to 51 per cent in model year 2018. The EPA projects 93 per cent of vehicles in the US will be equipped with GDI engines by 2025. According to the study, researchers predicts the increase in black carbon emissions from GDI-powered vehicles will fuel climate warming in urban areas of the US that significantly exceeds the cooling associated with a reduction in CO2.

In addition, they believe the shift will nearly double the premature mortality rate associated with vehicle emissions, from 855 deaths annually to 1,599. The researchers estimate the annual social cost of these premature deaths at $5.95 billion. The increase of black carbon is an unintended consequence of the shift to GDI-equipped vehicles that some scientists suspected was based on experimental data, according to the researcher.

Technology
New automotive technology that promises enhanced fuel efficiency may have a serious downside, including significant climate and public health impacts. Pixabay

“This study is the first to place these experimental findings in a complex modeling framework to investigate the trade-off between CO2 reduction and an increase in black carbon,” Slah said. While previous research has reported the shift to GDI engines will result in net benefits for the global climate, the researchers said that these benefits are rather small and can only be realized on timescales of decades.

Meanwhile, the negative impact of black carbon can be felt instantaneously, they added.

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“Our research shows the climate trade-off is much different on the regional scale, especially in areas with high vehicle densities. In these regions, the climate burden induced by the increase in black carbon dominates over the climate benefits of the reduction in CO2,” said Saleh. (IANS)