By Hui Hu
Winter is supposed to be the best season for wind power – the winds are stronger, and since air density increases as the temperature drops, more force is pushing on the blades. But winter also comes with a problem: freezing weather.
Comparing rime ice and glaze ice shows how each changes the texture of the blade. Gao, Liu and Hu, 2021, CC BY-ND
Ice buildup changes air flow around the turbine blade, which can slow it down. The top photos show ice forming after 10 minutes at different temperatures in the Wind Research Tunnel. The lower measurements show airflow separation as ice accumulates. Icing Research Tunnel of Iowa State University, CC BY-ND
Today in Pittsburgh, President Biden will outline his American Jobs Plan, proposals for major infrastructure investments in clean energy, water system updates, and other economy-growing initiatives designed to create millions of jobs, address aging infrastructure and lessen racial and other inequities throughout the economy.
Delta-8 THC is a cannabis product that has become a bestseller over the past few months, as many consumers find they can legally purchase it from CBD retailers. Its proponents say that Delta-8 THC will give you a nice little buzz, minus some of the more intense feelings (including paranoia) that are sometimes associated with marijuana.
Delta-8 THC is being marketed as a legal option for consumers who either don't live in a state with legal cannabis, or are a little apprehensive about how traditional psychoactive THC products will affect them. But is it all it's cracked up to be? Let's take a closer look, exploring what Delta-8 THC is, how it differs from other THC products, and whether it's actually legal for use.
nuleafnaturals.com<p><a href="https://nuleafnaturals.com/product/full-spectrum-delta-8-thc-oil-30mg-ml/" target="_blank" rel="noopener noreferrer">NuLeaf Naturals Full Spectrum Delta 8 THC Oil</a> is made from organic hemp and organic virgin hemp seed extract. It's available in a 150 mg bottle and a 450 mg bottle, which both provide 15 mg of Delta 8 THC per serving. This formula is also available in a soft gel.</p>
botanyfarms.com<p>The <a href="https://www.botanyfarms.com/product/delta-10-thc-vape-cartridge/?aff=14" target="_blank">Botany Farms Delta-10 THC Vape Cartridge</a> actually contains both Delta-10 and Delta-8 THC.This is designed to provide the desired effects of Delta-8 THC but without the drowsiness. They also offer a vape cartridge with a 1:1 concentration of <a href="https://www.botanyfarms.com/product/delta-10-delta-8-thc-vape-cartridge/?aff=14" target="_blank">Delta-8 THC</a> and Delta-10 THC. Note that while vape products can be used to aid in smoking cessation, we do not recommend vaping or smoking because of the negative health effects they can cause.</p>
FedEx's entire parcel pickup and delivery fleet will become 100 percent electric by 2040, according to a statement released Wednesday. The ambitious plan includes checkpoints, such as aiming for 50 percent electric vehicles by 2025.
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By Diana Madson
In Batesville, Arkansas, teachers are getting raises – thanks, in part, to solar power.
Megan Renihan is communications coordinator for the Batesville School District. She says that four years ago, teacher salaries were below average for the state, and lower than other districts in the county.
"In order to attract and retain our staff, we wanted to increase the pay," she says.
So the district started looking for ways to cut costs.
At the time, it was spending more than half a million dollars a year on utilities. To reduce its energy costs, the district installed thousands of LED lights, replaced windows and HVAC units, sealed leaks, and improved building insulation.
And it installed almost 1,500 solar panels that now generate about half of the district's electricity.
"We were the first school district in the state of Arkansas to invest in solar panels," Renihan says.
Together, the solar power and energy efficiency improvements are saving the district more than $300,000 a year. Along with other cost-cutting measures and state funding, those savings have helped raise teacher pay across the district.
"And that money is going to continue to go back into our teachers' salaries. That's the whole goal," Renihan says. "We want to be the best in the area for teachers, because that means that our kids are getting the best."
Reporting credit: Sarah Kennedy / ChavoBart Digital Media.
Reposted with permission from Yale Climate Connections.
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Environmental groups are launching a $10 million push for Congress to make climate change central to infrastructure legislation.
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Six major U.S. electricity utilities will collaborate to build a massive EV charging network across 16 states, they announced Tuesday.
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<div class="rm-shortcode" data-rm-shortcode-id="af257750b5c1ab7f96e54192adfe5a36"><div class="fb-post" data-href="https://www.facebook.com/greenpeaceaustraliapacific/posts/10159290307392971"></div></div>Like your style Victoria! 🎉💪😎
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By Jake Johnson
Members of the Congressional Progressive Caucus made clear Wednesday that while President Joe Biden's roughly $2.3 trillion infrastructure proposal is a welcome start, they believe the final package must be far more ambitious if it is to truly transform America's fossil fuel-dominated energy system and bring the country into line with crucial climate targets.
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For nearly 100 years, the Empire State Building has stood as a testament to the industriousness and economic power of the United States. Now, it can also be considered a beacon for the future of sustainable energy. Empire State Realty Trust (ESRT) signed a deal in early February to convert the Empire State Building, along with all of its other real estate holdings, to 100% renewable energy.
ESTR is Investing in the Economic and Environmental Future<p>ESTR's properties throughout the Northeast will not be directly powered by wind energy from Green Mountain Energy. Instead, Green Mountain will ensure that an equivalent amount of energy used by the Empire State Building and other holdings will be produced throughout the U.S. This not only reduces the nation's environmental footprint but provides access to sustainable energy to areas that could otherwise not afford such an investment.</p> <p>This is a major step forward in New York City's commitment to <a href="https://www.ecowatch.com/new-york-fossil-fuel-divestment-2524494059.html" target="_self">divesting fossil fuels</a>. In 2018, the city decided to <a href="https://comptroller.nyc.gov/newsroom/climate-action-mayor-comptroller-trustees-announce-first-in-the-nation-goal-to-divest-from-fossil-fuels/" target="_blank" rel="noopener noreferrer">file lawsuits</a> against several major fossil fuel companies directly contributing to the climate crisis. They also decided to divest the city's pension funds from fossil fuel companies and reserve owners. To celebrate, the Empire State Building glowed green from its peak to show support for the mayor's decision.</p>
Many congressional districts with the most clean energy potential are current fossil fuel hubs, potentially reducing political barriers to a just transition away from the energy sources that cause climate change, a Brookings report says.