Mercedes Debuts World's First Fully Electric Big Rig
Mercedes-Benz has unveiled the world's first big rig that drives without a drop of fuel.
The Mercedes-Benz Urban eTruckMercedes Benz
The new Mercedes-Benz Urban eTruck has an electrically driven rear axle and is powered by three lithium-ion battery modules. The zero-emission vehicle has an admissible total weight of up to 26 tonnes with a range of 200 kilometers (124 miles).
Although the range is on the low side, the model here is still a prototype. And, as Engadget pointed out, the "Urban" prefix implies that it's meant for use in the cities instead of, say, cross-country hauls.
As for noise pollution? Hardly a whisper, the German carmaker says.
"In the future, it will be necessary to transport goods in urban environments for increasing numbers of people—and with the lowest possible emissions and noise," Mercedes said in a press release. "By now large cities such as London or Paris are considering a ban on internal combustion engines in city centers in the future. That means: there will be fully electric trucks ensuring the supply of humans with food or other goods of daily needs."
Daimler, the company tasked with creating the vehicles, said their eTruck will be ready for the market by the beginning of the next decade. At that point, Daimler believes battery technology will be vastly improved and estimated that the cost of batteries will lowered by a factor of 2.5.
"We push the boundaries of what is technically feasible, very widely to the front," Wolfgang Bernhard, the CEO of Daimler Trucks and Buses, said.
Watch here as the eTruck whizzes down Germany's streets:
"To date the use of electric drives in trucks has been extremely limited," Bernhard added. "Meanwhile, cost, performance and charging time evolve so rapidly that we now see a turnaround for distribution: It's time for the electric truck."
He's right—this is a much-needed upgrade as heavy duty vehicles are some of the biggest polluters on the road. According to Slate:
Transportation is responsible for 28 percent of the nation's carbon emissions, second only to power plants at 31 percent. By nearly any measure, trucks play an outsize role in contributing greenhouse gas. They comprise just 4.3 percent of vehicles in the U.S., drive 9.3 percent of all miles driven each year, yet consume more than 25 percent of the fuel burned annually.
The Obama administration has made major efforts to slash truck emissions. Last year, in an effort to slash emissions and fight climate change, the U.S. Environmental Protection Agency and National Highway Traffic Safety Administration proposed new fuel-efficiency and carbon-cutting standards for trucks and other large vehicles. The proposal is meant to cut emissions by 1 billion metric tons, trim fuel costs by $170 billion and reduce oil consumption by 1.8 billion barrels, U.S. News reported.
120 years ago #Daimler built the worlds first truck, now we see the birth of the worlds first 26 ton electric #truck https://t.co/jx1GpPjpof— Mercedes-Benz Trucks (@Mercedes-Benz Trucks)1469707745.0
Mercedes might have beat him to it, but Elon Musk also has a vision of all-electric trucks. As the Tesla CEO wrote in his now-famous
Master Plan, producing electric buses and heavy duty trucks are part of his vision of transitioning to a sustainable transportation future.
"In addition to consumer vehicles, there are two other types of electric vehicle needed: heavy-duty trucks and high passenger-density urban transport," he wrote. "Both are in the early stages of development at Tesla and should be ready for unveiling next year."
"We believe the Tesla Semi will deliver a substantial reduction in the cost of cargo transport, while increasing safety and making it really fun to operate," Musk continued.
Incidentally, Musk even has some Daimler talent on his team to bring his vision to life. Jerome Guillen, a longtime Daimler engineer who helped develop the Cascadia truck, is in charge of the Tesla Semi program, Electrek reported.
@danahull Jerome is driving Tesla Semi & doing a great job with his team. At Daimler, he led their most successful semi truck program ever.— Elon Musk (@Elon Musk)1469077120.0
Mercedes and Daimler also has the
world's first autonomous bus to its name, so Musk and his Tesla team definitely have some friendly competition in this arena.
SUPER COOL! World's First Self-Driving Bus Drives Flawlessly Through Amsterdam https://t.co/YPa1dnz1d9 @MercedesBenz @mzjacobson @edbegleyjr— EcoWatch (@EcoWatch)1469026544.0
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By Alyssa Murdoch, Chrystal Mantyka-Pringle and Sapna Sharma
Summer has finally arrived in the northern reaches of Canada and Alaska, liberating hundreds of thousands of northern stream fish from their wintering habitats.
A Good News Story?<p>On the surface, the <a href="https://doi.org/10.1111/fwb.13569" target="_blank">results from our study</a> appear to provide a "good news" story. Warming temperatures were linked to higher numbers of fish, more species overall and, therefore, potentially more fishing opportunities for northerners.</p><p>Initially, we were surprised to learn that warming was increasing the distribution of cold-adapted fish. We reasoned that modest amounts of warming could lead to benefits such as increased food and winter habitat availability without reaching stressful levels for many species.</p>
Photo of Arctic grayling (left) and Dolly Varden trout (right). Alyssa Murdoch / Lilian Tran / Nunavik Research Centre and Tracey Loewen / Fisheries and Oceans Canada<p>Yet, not all fish species fared equally well. Ecologically unique northern species — those that have evolved in colder, more nutrient-poor environments, such as Arctic grayling and Dolly Varden trout — were showing declines with warming.</p>
Fish Strandings and Buried Eggs<p>Recent news headlines run the gamut for Pacific salmon — from their increased escapades <a href="https://nunatsiaq.com/stories/article/more-pacific-salmon-showing-up-in-western-arctic-waters/" target="_blank">into the Arctic</a> to <a href="https://www.juneauempire.com/news/warm-waters-across-alaska-cause-salmon-die-offs/" target="_blank">massive pre-spawning die-offs</a> in central Alaska. Similarly, results from our study revealed different outcomes for fish depending on local climatic conditions, including Pacific salmon.</p><p>We found that warmer spring and fall temperatures may be helping juvenile salmon by providing a longer and more plentiful growing season, and by supporting early egg development in northern regions that were previously too cold for survival.</p><p>In contrast, salmon declined in regions that were experiencing wetter fall conditions, pointing to an increased risk of flooding and sedimentation that could bury or dislodge incubating eggs.</p>
Headwaters of the Wind River within the largely intact Peel River watershed in northern Canada. Don Reid / Wildlife Conservation Society Canada / Author provided<p>Interestingly, we found that certain climatic combinations, such as warmer summer water temperatures with decreased summer rainfall, were important in determining where Pacific salmon could survive. Summer warming in drier watersheds led to declines, suggesting that lowered streamflows may have increased the risk of fish becoming stranded in subpar habitats that were too warm and crowded.</p>
The Fate of Northern Fisheries<p>The promise of a warmer and more accessible Arctic has attracted mounting interest in new economic opportunities, <a href="https://doi.org/10.1016/j.marpol.2019.103637" target="_blank">including fisheries</a>. As warming rates at higher latitudes are already <a href="https://www.ipcc.ch/sr15/" target="_blank">two to three times global levels</a>, it seems probable that northern biodiversity will experience dramatic shifts in the coming decades.</p><p>Despite the many unknowns surrounding the future of Pacific salmon, many fisheries are currently <a href="https://doi.org/10.1080/03632415.2017.1374251" target="_blank">thriving following warmer and more productive northern oceans</a>, and some <a href="https://doi.org/10.14430/arctic68876" target="_blank">Arctic Indigenous communities are developing new salmon fisheries</a>.</p><p>As warming continues, the commercial salmon fishing industry is poised to expand northwards, but its success will largely depend on extenuating factors such as <a href="https://www.eenews.net/stories/1060023067" target="_blank">changes to marine habitat and food sources</a> and <a href="https://www.yukon-news.com/news/promising-chinook-salmon-run-failed-to-materialize-in-the-yukon-river-panel-hears/" target="_blank">how many fish are caught during the freshwater stages of their journey</a>.</p><p>Even with the potential for increased northern biodiversity, it is important to recognize that some northern communities may be unable to adapt or may <a href="https://thenarwhal.ca/searching-for-the-yukon-rivers-missing-chinook/" target="_blank">lose individual species that are associated with important cultural values</a>.</p>
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If you get a call from a number you don't recognize, don't hit decline — it might be a contact tracer calling to let you know that someone you've been near has tested positive for the coronavirus.
Interviews With Contact Tracers<p>Contact tracing is a public health strategy that involves identifying everyone who may have been in contact with a person who has the coronavirus. Contact tracers collect information and provide guidance to help contain the transmission of disease.</p><p>It's been used during outbreaks of sexually transmitted infections (STIs), Ebola, measles, and now the coronavirus that causes COVID-19.</p><p>It starts when the local department of health gets a report of a confirmed case of the coronavirus in its community and gives that person a call. The contact tracer usually provides information on how to isolate and when to get treatment, then tries to figure out who else the person may have exposed.</p><p>"We ask who they've been in contact with in the 48 hours prior to symptom onset, or 2 days before the date of their positive test if they don't have symptoms," said <a href="https://case.edu/medicine/healthintegration/people/heidi-gullett" target="_blank">Dr. Heidi Gullett</a>, associate director of the Center for Community Health Integration at the Case Western Reserve University School of Medicine and medical director of the Cuyahoga County Board of Health in Ohio.</p>
“You’ve Been Exposed”<p>After the case interview, contact tracers will get to work calling the folks who may have been exposed to the coronavirus by the person who tested positive.</p><p>"We give them recommendations about quarantining or isolating, getting tested, and what to do if they become sick. If they're not already sick, we still want them to self-quarantine so that they don't spread the disease to anyone else if they were to become sick," said Labus.</p><p>Generally, the contact tracer won't ask for additional contacts unless they happen to call someone who is sick or has a confirmed case of the virus. They will help ensure the contact has the resources they need to isolate themselves, if necessary. The contact tracer may continue to stay in touch with that person over the next 14 days.</p><p>"We follow the percentage of people that were contacts, then converted into being actual cases of the virus. It's an important marker to help us understand what kind of transmission happens in our community and how to control the virus," said Gullett.</p>
Why You Should Participate (and What Happens If You Don’t)<p>A <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(20)30457-6/fulltext" target="_blank">Lancet study</a> from June 16, which looked at data from more than 40,000 people, found that COVID-19 transmission could be reduced by 64 percent through isolating those who have the coronavirus, quarantining their household, and contacting the people they may have exposed.</p><p>The combination strategy was significantly more effective than mass random testing or just isolating the sick person and members of their household.</p><p>However, contact tracing is only as effective as people's willingness to participate, and a small number of people who've contracted the coronavirus or were potentially exposed are reluctant to talk.</p><p>"Contact tracers have all been hung up on, cussed at, yelled at," said Gullet.</p><p>The hesitation to talk to contact tracers often stems from concerns over privacy — a serious issue in healthcare.</p>
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