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Scientists create bio-engineered mushroom that generates renewable energy
A mushroom has been turned into a renewable energy generator using 3D printed materials and bacteria. In a paper published by the journal Nano Letters, scientists from the Stevens Institute of Technology in Hoboken, New Jersey detailed their experiment wherein strands of graphene were intertwined with cyanobacterial cells on a mushroom cap to capture 65 nanoamps of power. While this amount of power is a fraction of what would be needed to power even an LED, the initial results are promising for further development as a source of renewable energy.
What are Cyanobacteria?
Cyanobacteria, more commonly known as “blue-green algae”, are aquatic, photosynthetic bacteria that have been around for about 3.5 billion years. In addition to the energy produced by photosynthesis, cyanobacteria also produce oxygen, and their ancient ancestors are credited with producing the original oxygen in our atmosphere. These bacteria are further responsible for the origin of plants – the chloroplasts that enable photosynthesis are actually cyanobacterium living in plant cells.
When these bacteria photosynthesize, a fraction of the electrons resulting from the process are released into the surrounding environment. This process of light-induced electric current, termed “photocurrent”, is not very efficient in nature. However, the scientists in this experiment designed a 3D-printable mixture with the bacteria which made the distribution of cells more efficient for photocurrent generation and collection. After being printed onto a mushroom cap, the photocurrent produced was eight times greater than what is produced naturally.
Other Materials
Graphene is a semimetal form of carbon with electrical conductivity and a very thin size. In fact, it’s one of the thinnest materials ever produced. Due to these properties, it was chosen as the base of the 3D printed ink to collect the electricity from the cyanobacteria placed on the mushroom cap. Mushrooms were chosen first to provide a surface and nutrients for the cyanobacteria to grow, and second, they enabled the bacteria to last several days longer compared to other bases and materials.
By accessing and augmenting the unique properties of both the bacteria and nanomaterials (graphene), the scientists in this study have created a new functional bio-hybrid system. With their proof-of-concept “bionic” mushroom, they are hopeful their research can be used to expand to include more bio-hybrid applications. The bacteria themselves have several other properties which can be integrated for purposes such as glowing identification tags for medical use, toxin sensing, and fuel production.
The Future is Now
Cyanobacteria are already being used for other “green” projects besides energy generation, namely in removing CO2 from the air as a result of manufacturing. In one prominent example, Lennaeus University in Sweden has created a system of pushing gases produced in cement production through water bags full of cyanobacteria called the Algoland project. Through this process, nearly all of the CO2 is scrubbed from the emissions using the bacteria’s natural photosynthesis. Other natural limitations of the bacteria are being addressed by projects using techniques such as gene editing for more efficient CO2 conversion and rate of growth.
Elon Musk
Tesla kicks Robotaxi geofence expansion into high gear in Austin
Tesla has nearly doubled its Robotaxi geofence in Austin for the second time less than two months after it initially launched.

Tesla has kicked the expansion of its Robotaxi geofence in Austin, Texas, into high gear, as it grew the service area once again early Sunday morning.
Tesla launched its Robotaxi platform in Austin on June 22, and less than a month later, it was able to expand it. After its first expansion, Tesla had a larger geofence than Waymo, which launched its driverless ride-hailing service to the public in Austin in March. Waymo expanded the week after Tesla’s first augmentation.
Waymo responds to Tesla’s Robotaxi expansion in Austin with bold statement
Now, Tesla has answered Waymo once again by developing its service area in Austin to an even larger size. We expected it, as just two weeks ago, CEO Elon Musk said that the company would be growing the Austin geofence, but did not give an indication by how much.
The first geofence in Austin was roughly 20 square miles. On July 14, when the first expansion took place, Tesla Robotaxi riders had roughly 42 square miles of downtown Austin available for travel.
On the morning of August 3, Tesla nearly doubled the geofence by growing it to roughly 80 square miles, according to Grok. For reference, Waymo’s current service area in Austin is about 90 square miles:
For those asking me, here is a comparison of the newly expanded @Tesla @robotaxi
service area (as of 3 August 2025) and the newly expanded Waymo service areas in Austin, Texas.The autonomous ride hailing service area & system capabilities scalability is certainly being tested… pic.twitter.com/uaPpEP66Cq
— Joe Tegtmeyer 🚀 🤠🛸😎 (@JoeTegtmeyer) August 3, 2025
The expansion further extends the Southern portion of the geofence, going into suburban zones such as Barton Creek.
The continuous growth shows Tesla is prepared to extend its geofence in basically any direction. Now that it is going into suburban areas, we may get to see more Austin residents experience Robotaxi for an entire evening of activities, including pickup and dropoff at home.
🚨 Tesla Austin Robotaxi geofence sizes (in square miles):
Initial: 6/22 – ~20 square miles
First Expansion: 7/14 – ~42 square miles
Second Expansion: 8/3 – ~80 square miles pic.twitter.com/IwnvSJseE4
— TESLARATI (@Teslarati) August 3, 2025
The only question that remains is how much Tesla can expand at one time. The company seems to have the ability to push the geofence to a majority of Austin, but it maintains that safety is its biggest priority.
The company was spotted testing vehicles in the West Austin suburbs in areas like Marble Falls recently, indicating that Tesla could be expanding its service area to hundreds of square miles in the coming months.
Elon Musk
Tesla to appeal jury verdict that held it partially liable for fatal crash
Tesla will appeal the decision from the eight-person jury.

Tesla will appeal a recent jury verdict that held it partially liable for a fatal crash that occurred in Key Largo, Florida, in 2019.
An eight-person jury ruled that Tesla’s driver assistance technology was at least partially to blame for a crash when a vehicle driven by George McGee went off the road and hit a couple, killing a 22-year-old and injuring the other.
The jury found that Tesla’s tech was found to enable McGee to take his eyes off the road, despite the company warning drivers and vehicle operators that its systems are not a replacement for a human driver.
The company states on its website and Owner’s Manual that Autopilot and Full Self-Driving are not fully autonomous, and that drivers must be ready to take over in case of an emergency. Its website says:
“Autopilot is a driver assistance system that is intended to be used only with a fully attentive driver. It does not turn a Tesla into a fully autonomous vehicle.
Before enabling Autopilot, you must agree to ‘keep your hands on the steering wheel at all times’ and to always ‘maintain control and responsibility for your vehicle.’ Once engaged, Autopilot will also deliver an escalating series of visual and audio warnings, reminding you to place your hands on the wheel if insufficient torque is applied or your vehicle otherwise detects you may not be attentive enough to the road ahead. If you repeatedly ignore these warnings, you will be locked out from using Autopilot during that trip.
You can override any of Autopilot’s features at any time by steering or applying the accelerator at any time.”
Despite this, and the fact that McGee admitted to “fishing for his phone” after it fell, Tesla was ordered to pay hundreds of millions in damages.
Tesla attorney Joel Smith said in court (via Washington Post):
“He said he was fishing for his phone. It’s a fact. That happens in any car. That isolates the cause. The cause is he dropped his cell phone.”
In total, Tesla is responsible for $324 million in payouts: $200 million in punitive damages, $35 million to the deceased’s mother, $24 million to their father, and $70 million to their boyfriend, who was also struck but was injured and not killed.
The family of the deceased, Naibel Benavides Leon, also sued the driver and reached a settlement out of court. The family opened the federal suit against Tesla in 2024, alleging that Tesla was to blame because it operated its technology on a road “it was not designed for,” the report states.
Despite the disclosures and warnings Tesla lists in numerous places to its drivers and users of both Autopilot and Full Self-Driving, as well as all of its active safety features, the operator remains responsible for paying attention.
CEO Elon Musk confirmed it would appeal the jury’s decision:
We will
— Elon Musk (@elonmusk) August 1, 2025
The driver being distracted is a big part of this case that seemed to be forgotten as the jury came to its decision. Tesla’s disclosures and warnings, as well as McGee’s admission of being distracted, seem to be enough to take any responsibility off the company.
The appeal process will potentially shed more light on this, especially as this will be a main point of emphasis for Tesla’s defense team.
Elon Musk
Elon Musk echoes worries over Tesla control against activist shareholders
Elon Musk has spoken on several occasions of the “activist shareholders” who threaten his role at Tesla.

Elon Musk continues to raise concerns over his control of Tesla as its CEO and one of its founders, as activist shareholders seem to be a viable threat to the company in his eyes.
Musk has voiced concerns over voting control of Tesla and the possibility of him being ousted by shareholders who do not necessarily have the company’s future in mind. Instead, they could be looking to oust Musk because of his political beliefs or because of his vast wealth.
We saw an example of that as shareholders voted on two separate occasions to award Musk a 2018 compensation package that was earned as Tesla met various growth goals through the CEO’s leadership.
Despite shareholders voting to award Musk with the compensation package on two separate occasions, once in 2018 and again in 2024, Delaware Chancery Court Judge Kathaleen McCormick denied the CEO the money both times. At one time, she called it an “unfathomable sum.”
Musk’s current stake in Tesla stands at 12.8 percent, but he has an option to purchase 304 million shares, which, if exercised, after taxes, he says, would bump his voting control up about 4 percent.
However, this is not enough of a stake in the company, as he believes a roughly 25 percent ownership stake would be enough “to be influential, but not so much that I can’t be overturned,” he said in January 2024.
I am uncomfortable growing Tesla to be a leader in AI & robotics without having ~25% voting control. Enough to be influential, but not so much that I can’t be overturned.
Unless that is the case, I would prefer to build products outside of Tesla. You don’t seem to understand…
— Elon Musk (@elonmusk) January 15, 2024
Musk’s concerns were echoed in another X post from Thursday, where he confirmed he has no current personal loans against Tesla stock, and he reiterated his concerns of being ousted from the company by those he has referred to in the past as “activist shareholders.”
The CEO said during the company’s earnings call in late July:
“That is a major concern for me, as I’ve mentioned in the past. I hope that is addressed at the upcoming shareholders’ meeting. But, yeah, it is a big deal. I want to find that I’ve got so little control that I can easily be ousted by activist shareholders after having built this army of humanoid robots. I think my control over Tesla, Inc. should be enough to ensure that it goes in a good direction, but not so much control that I can’t be thrown out if I go crazy.”
The X post from Thursday said:
Just fyi I don’t have personal loans at this time against Tesla stock.
Also, the taxes on the options are ~45%, so net gain in voting control is more like 4%.
It is worrying in that I don’t want to build millions of robots and then potentially be ousted by activists and…
— Elon Musk (@elonmusk) July 31, 2025
There is a concern that Musk could eventually put his money where his mouth is, and if politicians and judges are able to limit his ownership stake as they’ve been able to do with his pay package, he could eventually leave the company.
The company’s shareholders voted overwhelmingly to approve Musk’s pay package. A vast majority of those who voted to get Musk paid still want him to be running Tesla’s day-to-day operations. Without his guidance, the company could face a major restructuring and would have a vastly new look and thesis.
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