Many efforts are underway to reduce the environmental impact of cars, but what about the tires those cars ride on? Continental thinks it might help. Roadshowreports the company has introduced the Conti GreenConcept (yes, a concept tire) where more than half of the materials are "traceable, renewable and recycled." You can even renew the natural rubber tread with little trouble — not a completely new idea, but refreshable treads have generally been reserved for large commercial trucks. Three renewals would be enough to ensure the material used for casing is cut in half relative to the total mileage.

About 35 percent of the materials are renewables, including dandelion rubber, silicate made from rice husk ash and a string of vegetable oils and resins. Another 17 percent is polyester yarn made from recycled PET bottles, reclaimed steel and recovered carbon black.

The design should improve the efficiency of the cars themselves, Continental added. New casing, sidewall and tread patterns make the GreenConcept about 40 percent lighter than a conventional tire at about 16.5lbs, That, in turn, leads to 25 percent lower rolling resistance than the highest-rated tires in the EU. Continental estimates you'd get six percent more range from an electric vehicle.

While you might not outfit your car with these exact tires any time soon, this is more than just a thought exercise. Continental plans to gradually deploy its recycling technology starting in 2022, including the production of tires using recycled bottles. 

Efforts like the Conti GreenConcept are partly meant to burnish Continental's public image. It wants to be the most environmentally responsible tire company by 2030, and become completely carbon-neutral by 2050 "at the latest." However, it also hints at a more holistic approach to eco-friendly cars where many components, not just the powertrain, are kinder to the planet.

Despite its problems including inefficiency and pollution, Hyundai is betting big on hydrogen. The company has unveiled a new strategy called Hydrogen Vision 2040, including next-gen fuel cell technology and new concept vehicles include trucks, trailer drones and a 650 horsepower hybrid fuel-cell sports car developed in conjunction with its new partner, Rimac.

The most intriguing hydrogen product is the fuel cell Trailer Drone, a cab-less "hydrogen-powered container transportation system capable of operating fully autonomously," according to Hyundai. Powered by the modular fuel cell "e-Bogie" wheel sub-frame, it could travel up to 1,000 km on a tank of H2, "comparable to existing container transportation system." The trailer itself would contain the sensors and computers needed for autonomous driving. 

Hyundai

The e-Bogies could operate independently or be used in pairs to make up a Trailer Drone. Each bogie could turn independently, making the trailer more maneuverable than a normal semi on tight streets. They could also operate in platoons on the highway to boost efficiency. On arrival, the trailer could automatically unload itself by lifting onto legs, transformer style, while the e-Bogies drive away to the next task. The trailers could even be divided into three containers, making the majority of the trip connected then breaking away into independent e-Bogies to the final destination. 

Hyundai

The automaker is also interested in consumer tech, unveiling a 670 horsepower hydrogen plug-in hybrid sports car called the Vision FK concept developed in collaboration with Rimac. It's powered by Hyundai's next-gen fuel cell tech, mated to a large battery pack. As such, it could be plugged in for extra range or powered by hydrogen. Since a fuel cell could directly charge the battery (or powered the four independent motors), the operation would be a bit simpler than a gas-powered hybrid car. 

Hyundai said it would be able to go about 600 km (372 miles) on a charge, and be refueled again in just five minutes — not counting the battery recharge time. As it stands now, it's just a concept and Hyundai has no concrete plans to put it in production. 

Hyundai

Hyundai also unveiled its third-generation fuel cell stack technology, expected to arrive in 2023 and replace Hyundai's current Nexo fuel cell tech. They'll be available in a 100 kW unit that's 30 percent smaller than Hyundai's current 95 kW stack, and a 200 kW version similar in size to the current Nexo model but with more than double the output. 

The new fuel cells have a target life of 500,000 km (310,000 miles), up from 160,000 km for the current generation. Hyundai also expects the next-gen tech to cost around half of current fuel cells. They're also highly modular, meaning you can stack them to create "Power Unit Modules" with up to a megawatt of output "ideal for emergency power systems for large ships or IT companies," Hyundai said. Another "full-flat" system keeps the stack height under 10 inches for installation in the floor or ceiling of buses, trains or trams.

Hyundai

 One of the main problems with hydrogen power is the lack of infrastructure and Hyundai is addressing that with the H Moving Station concept. It's a heavy-duty vehicle designed to offer hydrogen refueling services in areas with limited infrastructure like rural areas or construction sites. It also unveiled the Rescue Hydrogen Generator Vehicle (RHGV). Rather than doling out hydrogen, it uses hydrogen fuel cells to generate electricity for stranded EVs or to power homes in the event of an emergency outage. 

All of this looks promising, but there's a reason most manufacturers are moving toward battery-powered EVs and away from hydrogen. Hydrogen is a highly explosive fuel that needs to be stored at very high pressures (either 350 or 700 bar), making infrastructure expensive and complex. On top of that, most hydrogen used in the US is created by reforming methane using steam, a process that produces significant amounts of CO2 that contributes to global warming. It also doesn't reflect well on the technology that some its greatest support comes from the oil industry. 

Europe might be making progress on reducing emissions, but its largest utility company doesn't think officials are moving quickly enough. Reutersreports Enel has issued a study warning Europe could be late on reducing greenhouse gas emissions if it continues at its "current pace." The European Union wants to reduce those emissions by 55 percent by 2030, Enel said, but it reportedly won't reach that target until 2051 without substantial changes.

The continent also wouldn't meet its 40 percent renewable energy goal (also set for 2030) until 2043, according to the study.

The utility suggested the EU would need to invest roughly €3.6 trillion (just under $4.3 trillion) to meet the 2030 emissions goal. Officials would also need to institute governance better-suited to the challenge, with an ability to quickly turn plans into "concrete action." This would included tighter coordination between EU member states as well as a more regional strategy to foster better market integration.

There was little doubt the Union would need to rethink its strategy. The 55 percent emissions reduction goal was a significant leap from the earlier 40 percent target. Enel also has a strong incentive here — additional spending would likely help Enel's renewable energy business. The findings might help quantify just how much work needs to be done, however, and the EU may well listen to a major energy supplier when it asks for more aggressive clean energy adoption.

Working since 2017 with Tokyo’s Waseda University, Nissan says it has developed and recently started testing a new recycling process that represents a more efficient and cost-effective way of recovering rare-earth metals from electric motors.

The process itself involves heating a used motor to 1,400 degrees Celsius (approximately 2,552 degrees Fahrenheit) so that it melts down. The company then adds an iron oxide to the mixture to oxidize the rare-earth metals, followed by a borate-based flux. The latter substance causes the molten mixture to separate into two liquid layers, with the rare-earth metals floating to the top of the mixture where they can be easily removed.

In testing, Nissan claims it’s been able to recover 98 percent of a motor’s rare-earth elements using the new recycling process. The entire procedure also takes about half as much time as manually disassembling a motor, which is what Nissan currently does to recycle rare-earth metals. The company hopes to implement the process by the mid-2020s.

Nissan

If we’re to have any chance to address the climate crisis, finding new and novel ways to recycle and reuse rare-earth metals will be vital. The 17 minerals that make up the rare-earth group are critical to making electric vehicles, solar panels and wind turbines. A 2018 study by the Dutch Ministry of Infrastructure found a shortage of rare-earth metals is likely to limit the world’s ability to meet the emission reduction targets set out by the Paris climate agreement.

Safaris can help you see nature, but they also tend to disrupt nature — the loud, smelly vehicles involved can disturb animals and hurt the environment in the process. They're quickly becoming less intrusive, however. Reutersnotes that the Kenyan-Swedish firm Opibus is converting diesel and gas safari vehicles in Kenya's Maasai Mara National Reserve into electric models. 

The converted EVs are not only quieter, but don't rumble or spew foul odors that might alarm animals. Many of the other benefits of electric cars apply here, too. Opibus' conversions don't produce CO2 emissions, and the company claims that electric motors cut operating costs in half by ditching fuel (and, we'd add, the quirks of combustion engines).

Opibus is the only company performing these conversions in Kenya, and it has only electrified 10 vehicles so far. There are also practical challenges to deploying safari EVs. African electrical grids aren't always reliable, and charging an EV in a nature reserve isn't as simple as finding a public station. There's also the simple matter of range — safari companies can't necessarily afford hours of downtime to recharge vehicles in between tours.

Even so, it's easy to imagine EVs finding widespread adoption in Kenya, South Africa and other countries where safari tourism is vital. The less intrusive the vehicles are, the more likely it is that wildlife will continue unimpeded. That's good for both the animals and the tourists hoping to spot elephants and lions that might otherwise stay away.

Google is updating its Nest Hub displays with a new feature that displays the air quality index (AQI), Android Central has reported. The feature will appear on the weather widget, showing a numeric ranking from 0 to 500 and color coding from green (good) to maroon (hazardous). Google is taking the data from the US government's AQI site used by the EPA to monitor air quality across the US. 

Along with the AQI index and colors in the weather widget, Nest display owners can also ask Google Assistant for air quality information by saying "what's the air quality near me" or something similar. You can also ask Assistant to give alerts when the air quality your location drops to unsafe levels, a feature that could be handy for folks with respiratory problems. 

The feature is rolling out as wildfires rage across the western United States, particularly in Oregon and California. "Between wildfire season and recent increased efforts to reduce air pollution, it’s more important than ever to know about the air quality in your area," Google said in a Nest community update. 

The update will be rolling out in select markets "over the coming weeks," hopefully in those regions affected by wildfires and smoke. In our review, we called the $100 Nest Hub (2nd generation) "a great smart display and mediocre sleep tracker." 

It's no longer possible to prevent the planet from heating over the next 20 to 30 years, and some of the changes global warming is bringing about are now impossible to undo in the short term, according to a new report from the United Nations' Intergovernmental Panel on Climate Change (IPCC). The document represents the most comprehensive analysis of the physical science behind climate change ever amassed in human history. The 284 scientists who worked on the project spent eight years examing data from more than 14,000 studies. They say human activity is "unequivocally" behind the Earth's rapidly changing climate.

Since the mid-19th century, the planet's temperature has increased by 1.1 degrees Celsius, or 2 degrees Fahrenheit, as a direct result of greenhouse gas emissions related to humans burning coal, oil and other fossil fuels for energy. We've already seen the effects a warmer planet can have on humans. It was only earlier this summer that parts of Canada and the US Pacific Northwest suffered through a sweltering and unprecedented heatwave that melted power cables, buckled roads and killed people.

"Many of the changes observed in the climate are unprecedented in thousands, if not hundreds of thousands of years, and some of the changes already set in motion — such as continued sea level rise — are irreversible over hundreds to thousands of years," the IPCC said.

Unless governments commit to sharply reducing emissions, limiting warming to the targets established in the Paris Climate Agreement will be "beyond reach," the report warns. With a 1.5 degree Celsius increase in global temperatures, there will be more frequent and life-threatening heat waves, droughts that leave millions struggling to find water and continued sea level rise that will likely displace coastal communities across the globe.

"We can expect a significant jump in extreme weather over the next 20 or 30 years," Piers Forster, one of the climate scientists who contributed to the report, told The New York Times. "Things are unfortunately likely to get worse than they are today."

Reiterating past UN reports, the IPCC also warned a 3 degree or even 4 degree Celsius increase in global temperatures would be catastrophic. With every additional degree of warming, there's a greater risk of the planet passing specific tipping points that could lead to even dramatic changes to the climate. According to the IPCC, drastic reductions in emissions can limit the worse effects of climate change and keep warming to 1.5 degrees Celsius. However, it could take between 20 to 80 years to see global temperatures stabilize.

The report will be front and center when diplomats travel to Glasgow, Scotland, to attend the UN's COP26 summit on climate change. As one of the largest emitters of greenhouse gases globally, the US can play a significant role in what happens next. After rejoining the Paris Climate Agreement, President Biden pledged America would cut its greenhouse emissions in half by 2030. Now more than ever, it's time to take action.

President Biden is throwing more of his weight behind electric cars. Biden is signing an Executive Order that sets a target for half of all new vehicles sold in 2030 to have some form of zero-emissions driving, whether it's a pure EV, plug-in hybrid or hydrogen fuel cell vehicle. The move is meant to not only promote clean transportation and limit climate change, but help the US "outcompete" a Chinese car industry that's quickly shifting toward electrified vehicles.

In sync with the order, the EPA and NHTSA will outline how they plan to undo the Trump administration's rollbacks of emissions and fuel efficiency standards. The two agencies will collaborate using standards built on the "momentum" from an agreement between California and automakers BMW, Ford, Honda, Volvo and VW. The EPA's proposed rules would take effect in the 2023 model year, while the NHTSA's would arrive in the 2024 model year. The team-up would have the standards mesh until model year 2026.

The Biden administration has rallied support from domestic brands for the effort. Ford, GM and Stellantis have declared a "shared aspiration" to meet the 2030 target and otherwise support Biden's vehicle electrification policies.

It's a significant goal. EVs have represented about 2 percent of US car sales for the past three years, according to the International Energy Agency and Pew Research. While the pandemic might have played a role in limiting 2020 sales, meeting the 2030 target would fundamentally transform the US car market, not to mention the charging infrastructure needed to support it.

However, it might drag behind some states, not to mention car makers. California and Massachusetts will ban all sales of new gas-based cars by 2035. GM also plans to exclusively sell EVs by that year, while Ford will go completely electric in Europe by 2030. Brands like Volvo and Stellantis' Fiat badge have also committed to full electrification by 2030. However ambitious the Biden plan might be, it could seem relatively modest in some respects.

Heatworks has at long last opened pre-orders for the Tetra, a countertop dishwasher the company unveiled to some fanfare at CES 2018. Since the Tetra doesn't require any plumbing, the only thing you need to connect it to is an electrical outlet. The appliance has a three-liter tank you fill with water manually. Once the cycle (which takes less than an hour on the shortest setting) is complete, you disconnect the greywater tank and pour out the used water.

The dishwasher can wash and dry three place settings worth of dishes per load. On the surface, it might seem wasteful compared with cleaning those plates, cups and utensils manually, not to mention the counter space the machine will hog. However, Heatworks claims the machine requires less water than handwashing and rinsing the dishes. 

There are several settings, including a "fruit" one for washing produce. In addition, the dishwasher uses recyclable cartridges with concentrated detergent in an attempt to reduce waste.

The Tetra also requires less power than a standard dishwasher, according to the company. To heat up water, Heatworks uses Ohmic Array Technology, as Gizmodo notes. The Tetra takes a microwave-style approach to heating water rather than harnessing traditional metal elements. It uses graphite electrodes and "advanced electronic controls" to excite natural minerals in water. That setup allows the Tetra to efficiently heat water and maintain precise temperature control, according to Heatworks.

While there are other countertop dishwashers that don't need a plumbing connection, the Tetra has a smaller water tank than many of its rivals. Farberware's FDW05ASBWHA model (which is currently $340) has a five-liter capacity. The Tetra may heat water more efficiently than other models as well.

The Tetra will typically cost $499, but Heatworks is offering a $100 discount to those who lock in a preorder now. The detergent cartridges will cost around $6 each and they should be good for 20 loads depending on the setting and load capacity. Heatworks expects to start shipping the Tetra by May 18th, 2022, which is No Dirty Dishes Day.

Roads that can charge electric cars or buses while you drive aren't a new concept, but so far the technology has been relatively expensive and inefficient. However, Indiana's Department of Transport (INDOT) has announced that it's testing a new type of cement with embedded magnetized particles that could one day provide efficient, high-speed charging at "standard roadbuilding costs," Autoblog has reported. 

With funding from the National Science Foundation (NSF), INDOT has teamed with Purdue University and German company Magment on the project. They'll carry out the research in three phases, first testing if the magnetized cement (called "magment," naturally) will work in the lab, then trying it out on a quarter-mile section of road. 

In a brochure, Magment said its product delivers "record-breaking wireless transmission efficiency [at] up to 95 percent," adding that it can be built at "standard road-building installation costs" and that it's "robust and vandalism-proof." The company also notes that slabs with the embedded ferrite particles could be built locally, presumably under license. 

The final phase sounds ambitious, with INDOT saying it would "test the innovative concrete’s capacity to charge heavy trucks operation at high power (200 kilowatts and above)." If the final quarter-mile test track is a success, INDOT will use the tech to electrify an undermined segment of public interstate in Indiana. 

Powering heavy trucks directly from the road without any pollution at an affordable price would be an environmental breakthrough, but there's still a lot of work to do to prove it works. Plenty of other similar efforts are underway, as the UK has committed around $780 million for under-road charging research, for example. Sweden has also tested slot-car like technology that would contain an electrified "rail" embedded into roads. This latest efforts sounds far less complicated, provided it lives up to Magment's claims,