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Scientists create ‘living concrete’ that could one day be used on Mars
Builders have been making concrete the same way for hundreds of years: by mixing sand with various binding materials.
However, a team of researchers at the University of Colorado, Boulder has a different approach. They’re making a new kind of concrete, one that is alive and can even replicate itself.
It’s made using a common type of microbe: cyanobacteria. This type of organism gets its energy through photosynthesis.
The field of synthetic biology is booming with researchers exploring new ways to build and new materials to work with. Recently, a different team has proposed the use of mycelium as another type of building material.
A major advantage of this new type of concrete is that it can heal itself, repairing any cracks that may appear.
The new concrete type was recently detailed in the journal Matter. “We already use biological materials in our buildings, like wood, but those materials are no longer alive,” Wil Srubar, an assistant professor in the Department of Civil, Environmental and Architectural Engineering (CEAE) said in a news statement. “We’re asking: Why can’t we keep them alive and have that biology do something beneficial, too?”
So how did the group build this new type of living concrete? First, the researchers tried putting the cyanobacteria in a mixture containing warm water, sand, and other nutrients. The microbes began producing calcium carbonate and gradually cemented the sand particles together.
But the process was extremely slow — too slow in fact for the project’s funder, Darpa, the Department of Defense’s research offshoot.
The team switched its focus to gelatin, a food ingredient that once dissolved in water and cooled, created special bonds between its molecules. The team decided to try adding gelatin to the bacteria mixture.
Success! The gelatin not only provided more structure, but also worked with the bacteria and the result was faster-growing, living concrete. It took about a day for the bacteria to form concrete blocks, and although it was weaker than conventional concrete, it was sturdy enough for a person to stand on.
Blocks ranged in size from two-inch cubes to shoebox-sized to larger truss pieces. When stored in relatively dry air and at room temperature, it takes a few days for the blocks to reach their maximum strength. The bacteria can survive for several weeks and even be rejuvenated – resulting in further growth. Under the right conditions, of course.
“We know that bacteria grow at an exponential rate,” Srubar said. “That’s different than how we, say, 3D-print a block or cast a brick. If we can grow our materials biologically, then we can manufacture at an exponential scale.”
DARPA is extremely interested in this research and in self-growing material in general. That’s because it can be used to build structures in remote and inhospitable areas such as the desert or even outer space.
If the living concrete can prove to be scalable, that would reduce the number of materials that we will need to launch, which is a huge deal when even pound counts.
It’s much easier to bring biology with us than to carry bulky building materials to space. Perhaps the first humans on Mars will live in habitats fashioned out of cyanobacteria concrete bricks, or even mushrooms.
“Nature has figured out how to do a lot of things in a clever and efficient way,” Srubar said. “In austere environments, these materials would perform especially well because they use light from the sun to grow and proliferate with very little exogenous material needed for their growth,” added Srubar. “It’s going to happen one way or another, and we’re not going to be trucking bags of cement all the way to Mars. I really do think that we’ll be bringing biology with us once we go.”
Elon Musk
Tesla looks to expand Robotaxi geofence once again with testing in new area
It looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.
Tesla looks to be preparing for the potential expansion of the Robotaxi geofence once again, as the company was spotted testing the suite in an area well outside of the Austin service area.
After it first launched the Robotaxi platform on June 22, Tesla has managed to expand its geofence twice, essentially doubling the travel area both times.
The most recent expansion took the size of the geofence from 42 square miles to about 80 square miles, bringing new neighborhoods and regions of the city into the realm of where the driverless vehicles could take passengers.
However, it looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.
Over the weekend, one fan noticed a Robotaxi validation vehicle testing in Bee Cave, Texas, which is roughly 25 minutes from the edge of the current geofence:
Tesla spotted doing Robotaxi validation testing in Bee Cave, Texas, about 15 miles west of Austin (20-25 minute drive from current edge of geofence). pic.twitter.com/JCOcoys8SJ
— Sawyer Merritt (@SawyerMerritt) August 23, 2025
Tesla has been testing vehicles in the western suburbs of Austin for some time, and it seems the company is laying some groundwork to push its geofence expansion into Plaid Mode as competition with Waymo continues to be at the forefront of the conversation.
Waymo has been expanding with Tesla for some time, as the pace of expansion for the two companies has been relatively accelerated for the past couple of months.
Tesla’s expansions of the geofence sent a clear message to competitors and doubters, but it is still aiming to keep things safe and not push the envelope too quickly.
The geofence expansion is impressive, but Tesla is also focusing on expanding its vehicle fleet in both Austin and the Bay Area, where it launched a ride-hailing service in July.
Tesla Bay Area autonomous fleet to grow to over 100 units: Elon Musk
Still, safety is the priority at the current time.
“We are being very cautious. We do not want to take any chances, so we are going to go cautiously. But the service areas and the number of vehicles in operation will increase at a hyper-exponential rate,” CEO Elon Musk said during the Q2 Earnings Call.
News
Tesla considers making a big move with Model Y pricing as demand is skyrocketing
“Trending toward a need to expedite output even further, which could mean adjusting pricing upward in the coming days. Trying hard not to, will see.”
Tesla is considering making a big move with Model Y pricing as demand is skyrocketing due to the EV tax credit expiring in just over a month.
With the $7,500 EV tax credit set to be removed on September 30, Tesla is experiencing increased demand for its Model 3 and Model Y. Customers are doing whatever they can to take delivery of the car they ordered as soon as possible.
The IRS recently adjusted the EV tax credit’s rules slightly.
Previously, the vehicle had to be delivered by September 30, but a slight tweak the agency made last week will now allow customers to enter a legally binding contract along with a marginal down payment by that date. The delivery can occur after September 30, and the car can still qualify for the credit.
However, demand is getting so crazy for the Model Y that Tesla is considering a price increase on the all-electric crossover, as well as a potential boost in production output to keep up with orders.
Inventory is dwindling in several markets across the United States, a good sign for the company, as it could have one of its best quarters in recent history in terms of deliveries.
However, Tesla is thinking of bumping the price slightly, Raj Jegannathan, the company’s VP of IT, AI Infrastructure, Apps, Infosec, and Vehicle Service Operations, said on X:
Trending toward a need to expedite output even further, which could mean adjusting pricing upward in the coming days. Trying hard not to, will see.
— Raj Jegannathan (@r_jegaa) August 25, 2025
The price adjustment would come as a response to increasing production output, Jegannathan’s response seems to indicate.
The bump would help Tesla’s margins, but the idea that the company could adjust pricing by increasing it would not be popular with potential car buyers. It might encourage some buyers to put their orders in sooner, hoping to avoid a new, higher price.
However, it could also steer some buyers away from putting an order in on a vehicle, especially if the price increase is more than a few hundred dollars.
Tesla boosted the price of the Model S, Model X, and Cybertruck recently, but brought in a “Luxe Package” to help justify it.
It comes with Free Full Self-Driving, Free lifetime Supercharging, four years of premium service, and lifetime Premium Connectivity.
Tesla has produced its 100,000th new Model Y at Gigafactory Berlin. The milestone was announced by the electric vehicle maker through its official Tesla Manufacturing account on social media platform X.
New Tesla Model Y milestone
The milestone was announced by Tesla on X, when the company wrote “Today, we built the 100,000th New Model Y at Giga Berlin!” The announcement was accompanied by an image of a new Model Y coming off the line.
The milestone was received warmly by members of the Tesla community, many of whom expressed excitement at the further progress of the new Model Y program at Giga Berlin. The facility, after all, only produces Model Y units, which would make it the perfect site to produce new variants like the Model Y Performance and possibly even the Model Y L, which was recently launched in China.
New Model Y ramp
As noted in a previous report from electrive, the initial production of the new Model Y started in Giga Berlin around mid-January 2025. Since the new Model Y involved a changeover from the legacy Y to the new variant, the ramp of the new Model Y’s production at the Germany-based facility was likely a gradual process over the past months.
It would then be no surprise if the next 100,000 new Model Y units would be produced in Giga Berlin in a shorter period. Giga Berlin could become an even bigger factor in Tesla’s global sales, after all, especially if it becomes the site that produces the Model Y Performance and the Model Y L for Europe and other territories. Giga Berlin, if any, seems to be quite busy recently, with aerial videos of the facility showing a fleet of mysteriously covered Model Y units being stored within the complex.
Tesla looks to expand Robotaxi geofence once again with testing in new area
Tesla considers making a big move with Model Y pricing as demand is skyrocketing
Tesla produces 100,000th new Model Y in Giga Berlin
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