Tearing through the crowded streets of Philadelphia, an electric car and a gas-powered car sought to win a heated race. One that mimicked how cars are actually used. The cars had to stop at stoplights, wait for pedestrians to cross the street, and swerve in and out of the hundreds of horse-drawn buggies. That's right, horse-drawn buggies. Because this race took place in 1908. It wanted to settle once and for all which car was the superior urban vehicle. Although the gas-powered car was more powerful, the electric car was more versatile. As the cars passed over the finish line, the defeat was stunning. The 1908 Studebaker electric car won by 10 minutes. If in 1908, the electric car was clearly the better form of transportation, why don't we drive them now? Today, I'm going to answer that question by diving into the history of electric cars and what I discovered may surprise you.
EcoWatch Daily Newsletter
As bitcoin's fortunes and prominence rise, so do concerns about its environmental impact.
- 15 Top Conservation Issues of 2021 Include Big Threats, Potential ... ›
- How Blockchain Could Boost Clean Energy - EcoWatch ›
Like many other plant-based foods and products, CBD oil is one dietary supplement where "organic" labels are very important to consumers. However, there are little to no regulations within the hemp industry when it comes to deeming a product as organic, which makes it increasingly difficult for shoppers to find the best CBD oil products available on the market.
Charlotte's Web<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDcwMjk3NS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0MzQ0NjM4N30.SaQ85SK10-MWjN3PwHo2RqpiUBdjhD0IRnHKTqKaU7Q/img.jpg?width=980" id="84700" class="rm-shortcode" data-rm-shortcode-id="a2174067dcc0c4094be25b3472ce08c8" data-rm-shortcode-name="rebelmouse-image" alt="charlottes web cbd oil" data-width="1244" data-height="1244" /><p>Perhaps one of the most well-known brands in the CBD landscape, Charlotte's Web has been growing sustainable hemp plants for several years. The company is currently in the process of achieving official USDA Organic Certification, but it already practices organic and sustainable cultivation techniques to enhance the overall health of the soil and the hemp plants themselves, which creates some of the highest quality CBD extracts. Charlotte's Web offers CBD oils in a range of different concentration options, and some even come in a few flavor options such as chocolate mint, orange blossom, and lemon twist.</p>
- Best CBD Oils of 2020: Reviews & Buying Guide - EcoWatch ›
- Best CBD Oil for Pain Management - Top 10 CBD Oil Review 2020 ... ›
- Best CBD for Dogs 2020 - Organic CBD Oil for Pets - EcoWatch ›
- Full Spectrum CBD Oil: What To Know - EcoWatch ›
- Best CBD Waters: Plus All You Need to Know - EcoWatch ›
- The Best Water Soluble CBD Available Online - EcoWatch ›
- Best CBD for Sleep (Lab-Tested, Person-Tested Oils) - EcoWatch ›
- Strongest CBD Oils to Buy in 2021? - EcoWatch ›
- Best CBD Oils For Pain: Top 3 Brands of 2021 - EcoWatch ›
- 8 Science-Based Benefits of CBD Oil - EcoWatch ›
- Best CBD Vape Pen: Top Brands of 2020 - EcoWatch ›
- Because Price Matters: Most Affordable CBD Oils of 2021 - EcoWatch ›
Residential solar energy companies are helping more and more homeowners upgrade their properties to clean energy sources. Solar energy companies can equip you with the technology you need to harness the amazing power of the sun and reduce your need for fossil fuels. In this article, we'll review some of the most trustworthy providers and installers of solar power.
More and more homeowners in Raleigh, NC, have embraced renewable energy like solar power. This popular option allows residents to fuel their homes cleanly and effectively, minimizing their home's environmental footprint while lowering their monthly utility bills. What are the best solar companies in Raleigh, NC? We'll show you the top options, plus provide important information on solar panel systems, federal tax credits, and more.
By Stuart Braun
We spend 90% of our time in the buildings where we live and work, shop and conduct business, in the structures that keep us warm in winter and cool in summer.
But immense energy is required to source and manufacture building materials, to power construction sites, to maintain and renew the built environment. In 2019, building operations and construction activities together accounted for 38% of global energy-related CO2 emissions, the highest level ever recorded.
- Could IKEA's New Tiny House Help Fight the Climate Crisis ... ›
- Los Angeles City-Owned Buildings to Go 100% Carbon Free ... ›
- New Jersey Will Be First State to Require Building Permits to ... ›
By Matt Casale
There were many lessons to be learned from Texas' prolonged periods of lost power during its cold snap, which saw temperatures drop into the single digits. But one many people may not recognize is that electric vehicles, or EVs, can be part of a smart resiliency plan — not only in the case of outages triggered by the cold but in other scenarios caused by extreme weather events, from fire-related blackouts in California to hurricane-hit power losses in Puerto Rico.
A car driving in the snow in Dallas, Feb. 2021. Matthew Rader / CC BY-SA 4.0<p>Experts recognize that electric vehicles are a central climate solution for their role in reducing greenhouse gas emissions. But EVs are also essentially batteries on wheels. You can store energy in those batteries, and if EVs are equipped with something called <a href="https://en.wikipedia.org/wiki/Vehicle-to-grid" target="_blank">vehicle-to-grid</a> or vehicle-to-building technology, they can also be used to keep the lights on in emergencies. The technology allows the energy being stored in an EV battery to be pushed back into the grid or into buildings to provide power.</p><p>There are hurdles: The technology is still <a href="https://www.greenbiz.com/article/vehicle-grid-technology-revving" target="_blank">developing</a>, the vast majority of EVs currently on the road do not have this capability, and utilities would need regulatory approval before bringing it to scale. But done right it could be a great opportunity.</p><p>Electric car batteries can hold approximately <a href="https://www.wri.org/blog/2019/11/how-california-can-use-electric-vehicles-keep-lights" target="_blank" rel="noopener noreferrer">60 kilowatt hours (kWh)</a> of energy, enough to provide back-up power to an average U.S. household for two days. Larger electric vehicles like buses and trucks have even bigger batteries and can provide more power. The American company Proterra produces electric buses that can store <a href="https://www.proterra.com/press-release/proterra-launches-zx5-electric-bus/" target="_blank" rel="noopener noreferrer">up to 660 kWh of energy</a>. Electric <a href="https://www.wsj.com/articles/electric-trash-trucks-are-coming-quietly-to-your-town-11602098620#:~:text=Electric%20trash%20truck%20love%20is%20in%20the%20air.&text=A's%20program%20to%20reduce%20carbon,being%20primarily%20electric%20by%202023." target="_blank" rel="noopener noreferrer">garbage trucks</a> and even <a href="https://www.nytimes.com/2020/03/19/business/electric-semi-trucks-big-rigs.html" target="_blank" rel="noopener noreferrer">big-rigs</a>, with bigger batteries, are becoming a reality too.</p>
MTA New York City Transit / Marc A. Hermann / CC BY 2.0<p>If equipped with vehicle-to-grid or vehicle-to-building technology, those cars, buses and trucks could prove invaluable during future blackouts. People could rely on their cars to power their houses. Municipalities, transit agencies and school districts could send out their fleets to the areas most in need. We could power homes, shelters and emergency response centers — and could keep people warm, healthy and comfortable until power could be restored.</p><p>But to add this great resiliency tool to our arsenal in times of extreme weather, we must significantly increase the number of EVs on the road. In 2019 electric cars accounted for only about <a href="https://www.energy.gov/eere/vehicles/articles/fotw-1136-june-1-2020-plug-vehicle-sales-accounted-about-2-all-light-duty" target="_blank">2%</a> of all light-duty vehicle sales in the country. Electric buses and trucks are becoming more common in the United States, but still only represent a tiny fraction of the fleet. As it stands now, the EVs currently on the road, even if equipped with vehicle-to-grid technology, would do little to help a broad swath of the population in need of power.</p>
A line of electric cars at charging stations. Andrew Bone / CC BY 2.0
- Electric Vehicles Likely to Be as Cheap as Conventional Cars by ... ›
- Are Electric Vehicles Finally Taking Off? Here's What You Need to ... ›
- How Norway Convinced Drivers to Switch to Electric Cars - EcoWatch ›
- New USPS Fleet to Include Some Electric Vehicles, Some Gas With Electric Retrofit Potential - EcoWatch ›
Low-income Texans, especially those of color, disproportionately bore the burdens of the state's power grid failure that left them huddling for warmth, and dying, without heat in poorly insulated homes.
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>
By Jessica Corbett
While millions of Texans on Monday continued living without safe drinking water and many faced storm damage and massive electricity bills, youth leaders with the Sunrise Movement rallied at the state capitol in Austin, using the current conditions across the Lone Star State to bolster their demand for a Green New Deal.
<div id="33fe2" class="rm-shortcode" data-rm-shortcode-id="20d635a68d8c6c0e2ee0e9ba14e3bf69"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1363901146478219266" data-partner="rebelmouse"><div style="margin:1em 0">[email protected] at the Texas Capitol this morning to confront state and country leaders about last week’s snow storm… https://t.co/kokBBRZoNA</div> — Hannah Falcon (@Hannah Falcon)<a href="https://twitter.com/hannahfalcon_/statuses/1363901146478219266">1614014348.0</a></blockquote></div>
<div id="5f790" class="rm-shortcode" data-rm-shortcode-id="94bf16b155a9b5ee079ce2b230981e54"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1363909975597285382" data-partner="rebelmouse"><div style="margin:1em 0">And the state has the fucking gall right now to put troopers with ARs out on the capitol grounds to intimidate us.… https://t.co/WFUZcKDcKl</div> — EmGe (@EmGe)<a href="https://twitter.com/em_magining/statuses/1363909975597285382">1614016453.0</a></blockquote></div>
<div id="580d0" class="rm-shortcode" data-rm-shortcode-id="87ca15ef9a8a31b909d0919db56fa761"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1362528807073234948" data-partner="rebelmouse"><div style="margin:1em 0">We know that when our lights go out, there are neighborhoods like @GovAbbott’s whose don’t. The rest of us? We com… https://t.co/EwTZ4kA2Zh</div> — Sunrise Movement 🌅 (@Sunrise Movement 🌅)<a href="https://twitter.com/sunrisemvmt/statuses/1362528807073234948">1613687156.0</a></blockquote></div>
<div id="8bcef" class="rm-shortcode" data-rm-shortcode-id="c7186a458462e9d1332cd150cf23d73e"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1363902295344226304" data-partner="rebelmouse"><div style="margin:1em 0">Ted Cruz says he went to Mexico to be a "good parent." That was BS, as we all know. The way to be a good parent (or… https://t.co/uWZWdCgsbe</div> — Naomi Klein (@Naomi Klein)<a href="https://twitter.com/NaomiAKlein/statuses/1363902295344226304">1614014621.0</a></blockquote></div><p>Klein—author of <a href="https://inthesetimes.com/article/this-changes-everything-naomi-klein-lessons" target="_blank"><em>This Changes Everything: Capitalism vs the Climate</em></a> and other books—<a href="https://www.commondreams.org/news/2021/02/22/republicans-fear-green-new-deal-argues-naomi-klein-because-its-viable-alternative" target="_blank">argued</a> in a Sunday column for the <em>New York Times</em> that Republicans "fear" the Green New Deal because it offers a viable alternative to "the collapse of a 40-year experiment in free-market fundamentalism" that Texans are now enduring.</p><p>"The horrors currently unfolding in Texas expose both the reality of the climate crisis and the extreme vulnerability of fossil fuel infrastructure in the face of that crisis," Klein wrote. "So of course the Green New Deal finds itself under fierce attack. Because for the first time in a long time, Republicans face the very thing that they claim to revere but never actually wanted: competition—in the battle of ideas."</p>
<div id="d2af4" class="rm-shortcode" data-rm-shortcode-id="07057c3270fc8f809f160c8a4aeff329"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1363531126426398721" data-partner="rebelmouse"><div style="margin:1em 0">I wrote about why Texas Republicans are terrified of the #GreenNewDeal for @nytimes. Their ideas are no longer "l… https://t.co/RWDDJhCeua</div> — Naomi Klein (@Naomi Klein)<a href="https://twitter.com/NaomiAKlein/statuses/1363531126426398721">1613926128.0</a></blockquote></div><p> In a statement last week <a href="https://www.commondreams.org/news/2021/02/17/demanding-gov-abbotts-resignation-sunrise-movement-says-texas-crisis-shows-urgent" target="_blank">calling on</a> Abbott to resign over his handling of the storm and his lies about the power outages on <em>Fox News</em>, Sunrise digital director Paris Moran declared that "we deserve a government that addresses our basic needs and protects all of us in moments of crisis."</p><p>"Despite the lies you'll hear from Gov. Abbott on <em>Fox News</em>, that's truly what the Green New Deal is all about," said Moran, whose family in Texas lost electricity, had food go bad, and lacked consistent running water. "We must come together and rebuild an era of prosperity through the Decade of the Green New Deal."</p>
- Climate Activists Turn Up the Heat on NY Gov. Cuomo With Sit-In ... ›
- Climate Leader Alexandria Ocasio-Cortez Joins Hundreds of ... ›
- 1,000+ Youth Activists Storm Capitol to Demand Green New Deal ... ›
Countries most vulnerable to climate change are often the ones with the least financial resources to respond, and rich countries, which are accountable for the majority of global greenhouse gas emissions, are failing to support them.
By Theodore J. Kury
Americans often take electricity for granted – until the lights go out. The recent cold wave and storm in Texas have placed considerable focus on the Electric Reliability Council of Texas, or ERCOT, the nonprofit corporation that manages the flow of electricity to more than 26 million Texans. Together, ERCOT and similar organizations manage about 60% of the U.S. power supply.
In the Southeast, Southwest and Northwest U.S., traditional utilities generate electricity and deliver it to customers. Other regions, including Texas, have moved to competitive power markets run by Independent System Operators, or ISOs. FERC
By John Rogers
The Polar Vortex hitting much of the US has wreaked havoc not just on roadways and airports, but also on our electricity systems, as plenty are experiencing first-hand right now. Households, institutions, and communities across the region — and friends and family members — have been hit by power outages, and all that comes with them.
1. Restoring power (safely) is Job 1.<p>First: Some things about all this we won't know until we have the benefit of a few days — or months — of hindsight, and data. But one thing we do know right now is that electricity, which we so often take for granted, is crucial to so many aspects of our lives.</p><p>For some, power outages are an inconvenience. For others, they're <a href="https://blog.ucsusa.org/julie-mcnamara/hurricane-irma-power-outage" target="_blank" rel="noopener noreferrer">life-threatening</a>. So keeping the power flowing, or getting it back up as quickly as possible, is key. Grid operators need to avoid affecting vulnerable populations and critical infrastructure as much as possible when they're implementing rolling blackouts, and need to prioritize them when they're restoring service.</p><p>While all confronting power outages or near misses are indebted to those working around the clock to keep things from getting worse, keeping crews safe is also key. Weather like this, combined with the ongoing pandemic, sure doesn't make for the easiest working conditions, so utilities and grid operators will need to use really solid judgement about where they can safely focus people, and when, for any needed repairs.</p>
2. The power outages are about both supply and demand.<p>Utilities and grid operators have been hit by the double whammies of unprecedented demand and big challenges on the supply side. On the demand side, for example, Texas on Valentine's Day <a href="https://twitter.com/ERCOT_ISO/status/1361142665140711427" target="_blank">shattered</a> its previous winter peak record by almost 5%. The peak was 11,000 MW above what ERCOT, Texas's electric grid operator, was projecting and planning for as of November — some 15-20 good-sized power plants' worth.</p><p>And on the supply side, power lines taken out by the weather are a piece of it, as you'd expect. But it also turns out that all kinds of power plants have gone offline, for a range of reasons. Take natural gas, for example:</p>
3. Natural gas plants have been hit hard.<p>Gas plants suffer from their own supply-and-demand issues. One piece of it is the fact that the same gas that supplies them is also needed for heating homes and businesses. And if a power plant doesn't have firm contracts to get gas when it needs it, the way gas utilities would, the power plant loses out. The laws of physics may also be coming into play, as any moisture in the gas lines succumbs to the extreme cold and gums up the works—valves, for instance.</p><p>And indeed, initial indications are that a lot of the lost capacity is natural gas-fired. Data from Southwest Power Pool (SPP), the grid operator for much of the Great Plains, <a href="https://marketplace.spp.org/pages/capacity-of-generation-on-outage#%2F2021%2F02" target="_blank">show</a> that 70% of its "outaged" megawatts (MW) were natural gas plants.</p><p>ERCOT, which is powered primarily by natural gas and wind, was <a href="http://www.ercot.com/news/releases/show/225210" target="_blank" rel="noopener noreferrer">warning</a> yesterday that "Extreme weather conditions caused many generating units — across fuel types — to trip offline and become unavailable." It <a href="https://twitter.com/Sonalcpatel/status/1361365934204674053" target="_blank" rel="noopener noreferrer">clarified</a> elsewhere, though, that the majority of the capacity it had lost overnight was "thermal generators, like generation fueled by gas, coal, or nuclear". In all, Texas was out <a href="https://www.houstonchronicle.com/business/energy/article/Wholesale-power-prices-spiking-across-Texas-15951684.php" target="_blank" rel="noopener noreferrer">more than a third</a> of its total capacity.</p>
4. Don’t think an “all of the above” strategy would have saved the day.<p>As ERCOT's messages suggests, this isn't just a gas issue, and these last few days should in no way be fodder for the type of fact-free "all of the above" pushes <a href="https://blog.ucsusa.org/jeremy-richardson/rick-perry-rejects-facts-in-favor-of-coal-and-nuclear-bailouts" target="_blank" rel="noopener noreferrer">favored</a> by the prior administration.</p><p>For example, many power plants, including all nuclear plants, virtually all coal plants, and a lot of natural gas plants, depend on <a href="https://www.ucsusa.org/resources/water-power-plant-cooling" target="_blank" rel="noopener noreferrer">water to cool the steam</a> that drives the electricity-producing turbines. Any power plant dependent on cooling water will run into trouble if that cooling water is actually frozen solid. And they can have their own troubles with fuel availability during extreme cold.</p><p>(While we're on the subject of fossil fuels: Note that the extreme weather has also <a href="https://www.eenews.net/energywire/2021/02/16/stories/1063725119" target="_blank" rel="noopener noreferrer">hit oil production</a>, with the Permian basin, for example, down an estimated 1 million barrels a day.)</p>
5. Wind turbines can be winterized (but Texas…?).<p>Wind turbines aren't immune to extreme cold, and initial reports show that they, too, have been hit by this wave. In SPP, wind was the <a href="https://spp.org/newsroom/press-releases/spp-becomes-first-regional-grid-operator-with-wind-as-no-1-annual-fuel-source-considers-electric-storage-participation-in-markets-approves-2021-transmission-plan/" target="_blank">#1 source</a> of electricity last year, and initial data from yesterday suggested it accounted for almost a fifth of the capacity taken offline.</p><p>ERCOT also mentions wind turbines going offline; one source <a href="https://twitter.com/Sonalcpatel/status/1361357248988143620" target="_blank">suggests</a> 4,000 MW of wind was offline yesterday morning, compared with 26,000 MW of downed thermal capacity (mostly gas). Wind is ERCOT's second-largest supplier of power, accounting for 23% of its electricity last year (from a nation-leading <a href="https://cleanpower.org/resources/american-clean-power-market-report-q4-2020/" target="_blank" rel="noopener noreferrer">33,000 MW</a>).</p><p>But wind farms going offline appears to be a <a href="https://finance.yahoo.com/news/frozen-wind-farms-just-small-002954294.html" target="_blank" rel="noopener noreferrer">much smaller piece</a> of the picture than detractors will suggest. And wind power has played an important role in keeping the lights on in past extreme cold events (remember the <a href="https://www.ecowatch.com/wind-power-bomb-cyclone-2554824592.html" target="_self">Bomb Cyclone</a>?). They can also be at least partially winter-proofed — by hardening the control systems, using the right fluids, and de-icing the blades. But if you don't see weather like this coming…</p>
6. We need to be ready for more extreme weather.<p>And that's one of the lessons to learn from this episode, once we get beyond the immediacy of it all: Past performance is no indication of what's going to be coming at us. We know that climate change is bringing not just overall warming, but also <a href="https://ucsusa.org/resources/does-cold-weather-disprove-climate-change" target="_blank" rel="noopener noreferrer">more extremes at <em>both</em> ends</a>. We also know that there are all kinds of ways that <a href="https://www.ucsusa.org/resources/power-failure" target="_blank" rel="noopener noreferrer">climate change affects our ability to keep the lights on</a>.</p><p>So we need to be ready, or readier, for situations like this. And it turns out that there are <a href="https://blog.ucsusa.org/julie-mcnamara/noreaster-power-grid" target="_blank" rel="noopener noreferrer">a lot of ways</a> we can be. Stronger transmission links can <a href="https://mailchi.mp/acore/acore-statement-on-heartland-power-outages?e=a4ae549508" target="_blank" rel="noopener noreferrer">allow regions to back each other up</a> when they aren't all facing the same challenges at the same time. A diversity of (clean) power options can mean some might be available even when others aren't. (ERCOT anticipated yesterday morning being able to reconnect customers later that day in part because of "additional wind & solar output".)</p><p>We also <a href="https://blog.ucsusa.org/julie-mcnamara/one-way-to-boost-renewables-let-flexible-demand-lend-a-helping-hand" target="_blank" rel="noopener noreferrer">don't have to take electricity demand</a> as a fixed, can't-do-anything-about-it quantity. Utilities (including mine, a few days ago) called on customers to <a href="http://www.ercot.com/news/releases/show/225151" target="_blank" rel="noopener noreferrer">be as efficient as possible</a> to get us past the latest crunches. Programs put in place ahead of time can reward customers for delaying or shifting their electricity use.</p><p>And energy storage can be an important middleperson between supply and demand, from the large scale all the way down to battery packs in our garages and basements.</p>
Getting through this, and beyond<p>Right now, the task is getting the power back on. Longer term, the goal shouldn't be about ensuring 100% reliability (because of the prohibitive cost of removing that last fraction of a fraction of a possibility of a blackout), but to make them as infrequent and as limited in duration as possible. It should, though, be about making sure we make <a href="https://www.ucsusa.org/resources/lights-out" target="_blank">decisions</a> that serve us well in the short term and, in the face of climate change, in the long term.</p><p>Blackouts will happen; that doesn't mean we're powerless against them. The need is there, but so are the tools.</p><p><em><a href="https://blog.ucsusa.org/author/john-rogers" target="_blank">John Rogers</a> is a senior energy analyst with expertise in renewable energy and energy efficiency technologies and policies.</em></p><p><em>Reposted with permission from the <a href="https://blog.ucsusa.org/john-rogers/polar-vortex-power-outages-6-things-to-know-about-supply-demand-and-our-electricity-future" target="_blank">Union of Concerned Scientists</a>. </em></p>
- What Exactly Is the Polar Vortex? - EcoWatch ›
- Polar Vortex: Everything You Need to Know - EcoWatch ›
- What Exactly Is the Polar Vortex? - EcoWatch ›