News
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 Optimus dance video showcases the company’s quick progress
Elon Musk shares a new video of Tesla’s humanoid robot, Optimus, dancing with improved flexibility and control.
Elon Musk recently shared a Tesla Optimus dance video, showcasing the humanoid robot’s light feet and the company’s quick progress.
In 2021, Tesla announced it would develop a humanoid robot during AI Day. At the time, the company didn’t even have a prototype. To celebrate the announcement, a human dressed as a humanoid robot came out and danced for the crowd at the event. Fast forward a few years, and Tesla’s Optimus bot finally has some moves to show off.
The first time anyone got a real preview of Optimus was in 2022, when Tesla debuted semi-functional prototypes at AI Day. One Tesla Optimus bot walked on stage while another performed some arm movements. At the time, critics noted the Tesla Optimus bot’s reliance on teleoperation for some tasks.
By 2023, Tesla unveiled Optiumus Gen 2, demonstrating advanced tasks like sorting colored blocks, maintaining yoga poses, and some dancing. Tesla also noted that the robot’s hands improved to 11 degrees of freedom (DoF). Tesla Optimus hands in production units have 22 degrees of freedom.
Late last year, Tesla Optimus robots attended the company’s “We, Robot” event, performing tasks like serving drinks and interacting with people in the crowds. Teslarati played rock, paper, scissors with Optimus at “We, Robot.” The Tesla bots danced in synchronicity at the event with their arms and torsos.
Tesla’s progress with Optimus has been quite a ride over the past few years. Now Optimus can add to its dance moves with more flexibility and control over its legs. The recent Tesla Optimus dance video marks the beginning of the next phase for the humanoid robot: production.
According to Tesla’s Q1 2025 updated letter, the company has already started limited production of the Optimus bot at Tesla’s Fremont Factory. Elon Musk announced plans to produce over 1,000 units of Tesla Optimus for internal use in 2025 and external sales by 2026.
Elon Musk claims Tesla Optimus could be “more significant than Tesla’s vehicle business,” with a potential market value of $25 trillion. By automating low-skill, repetitive jobs, the Tesla bot could reshape economies, which Musk believes could lead to an “age of abundance” where goods and services are cheaper.
Investor's Corner
Rivian stock rises as analysts boost price targets post Q1 earnings
Rivian impressed with smaller-than-expected losses & strong revenue, pushing analysts to raise price targets.
Rivian stock is gaining traction as Wall Street analysts raise price targets following the electric vehicle (EV) maker’s first-quarter earnings report. Despite a dip after the announcement, optimism surrounds Rivian’s cost control and upcoming lower-priced cars.
Last week, Rivian reported a better-than-expected Q1 gross profit, surpassing Wall Street’s forecasts with adjusted losses of $0.48 per share against expectations of $0.92 per share. The company also reported a revenue of $1.24 billion compared to the $1.01 billion anticipated.
However, the EV automaker cut its 2025 delivery forecast and capital spending due to President Donald Trump’s tariffs. It explained that it is “not immune to the impacts of the global trade and economic environment.” RIVN stock dropped nearly 6% post-earnings, closing at $12.72 per share.
Wall Street remains upbeat about Rivian, citing progress toward launching lower-priced vehicles in 2026 and effective cost management. On Monday, Stifel analyst Stephen Gengaro raised his RIVN price target to $18 from $16, maintaining a “Buy” rating. He highlighted Rivian’s “solid progress” toward key milestones.
Conversely, Bernstein’s Daniel Roeska gave RIVN a “Sell” rating. However, Roeska also lifted his Rivian price target to $7.05 from $6.10, acknowledging “better” Q1 results. He warned that profitability remains distant and hinges on multiple product launches by the decade’s end.
Overall, Wall Street’s average price target for RIVN climbed from $14.18 to $14.31, a modest 13-cent increase reflecting positive sentiment. About one-third of analysts covering Rivian rate it a Buy, compared to the S&P 500’s average Buy-rating ratio of 55%.
On Monday, Rivian stock rose 2.7% to $14.64, slightly trailing the S&P 500 and Dow Jones Industrial Average, which gained 3.3% and 2.8%, respectively. The uptick may also stem from broader market gains tied to news of a temporary U.S.-China tariff suspension.
As Rivian navigates trade challenges and scales production at its Illinois factory, its Q1 performance and analyst support signal resilience. With lower-priced EVs on the horizon, Rivian’s strategic moves could bolster its position in the competitive EV market, offering investors cautious optimism for long-term growth.
News
EU weighs Starlink’s market impact during SES-Intelsat deal
As SES tries to buy Intelsat, the EU is checking if Starlink has an unfair edge. The review could shape Europe’s space future.
EU antitrust regulators are scrutinizing SES’s $3.1 billion bid to acquire Intelsat, probing whether SpaceX’s Starlink poses a credible rival in the satellite communications market. The European Commission’s review could shape the future of Europe’s space industry.
The Commission has sought feedback from customers of SES and Intelsat to assess Starlink’s competitive impact. According to Reuters, the questionnaire asks if low-earth orbit (LEO) satellite providers like Starlink and Eutelsat’s OneWeb are viable competitors for two-way satellite capacity. It also explores whether LEO suppliers are winning tenders and contracts and their potential to influence competition over the next five years. Additionally, regulators are evaluating customers’ bargaining power and ability to switch to rival suppliers.
SES operates a fleet of about 70 multi-orbit satellites for video broadcasting, government communications, and broadband internet. It aims to scale up through the acquisition of Intelsat. The move is part of a broader push in Europe to bolster home-grown satellite solutions, countering U.S. giants like SpaceX’s Starlink and Amazon’s Project Kuiper.
SES is in talks with the EU Commission and a few European governments to complement Starlink services, addressing concerns over reliance on foreign providers.
“Now the discussions are much more strategic in nature. They’re much more mid-term, long-term. And what we’re seeing is that all of the European governments are serious about increasing their defense spending. There are alternatives, not to completely replace Starlink, that’s not possible, but to augment and complement Starlink,” said SES CEO Adel Al-Saleh.
The EU Commission’s preliminary review of the SES-Intelsat deal is expected to conclude by June 10. The preliminary review will determine whether the SES-Intelsat deal is cleared outright, requires concessions, or faces a full-scale investigation if significant concerns arise. As Europe seeks to strengthen its space-based communication resilience, the outcome could redefine competitive dynamics in the satellite sector.
With Starlink’s LEO technology disrupting traditional satellite services, the Commission’s findings will signal how Europe balances innovation with strategic autonomy. SES’s efforts to scale and collaborate with governments underscore the region’s ambition to remain competitive, potentially reshaping the global satellite landscape as demand for reliable connectivity grows.
Tesla Optimus dance video showcases the company’s quick progress
Rivian stock rises as analysts boost price targets post Q1 earnings
EU weighs Starlink’s market impact during SES-Intelsat deal
-
News1 week agoTesla offers legacy Model Y owners an interesting promotion
-
News5 days agoTesla Cybertruck Range Extender gets canceled
-
News2 weeks agoTesla posts Semi factory update, shares new Semi logo design
-
News2 weeks agoTesla opens whopping 83 job listings for Semi program
-
News2 weeks agoLike it or not, the new Tesla Model Y is a big hit in China
-
News2 weeks agoTesla Model Y with three rows and extended wheelbase rumored to start production in China
-
News2 weeks agoBerlin Senator calls Tesla “Nazi” cars, pisses off Brandenburg because Giga Berlin is a giant employer
-
News2 weeks agoStarlink nears S Korea launch as satellite internet demand rises