News
Mars’ longtime polar mystery may have finally been solved
From the surface, Mars may seem like a dry, desert-like world lacking water, but a closer look at the planet’s poles will some striking structures: massive polar ice caps.
At the north pole, the ruddy terrain peeks through the ice, like zebra stripes. In the south pole lurks a mystery, a massive deposit of frozen carbon dioxide and water ice. Scientists have spent decades trying to understand how it formed and how it’s linked to the amount of carbon dioxide (CO2) in the Martian atmosphere.
A pair of scientists in the 1960s came up with a plausible theory, and now, decades later, a new study published in Nature Astronomy may have confirmed their findings.
The massive deposit — measuring 3,280 feet (1 kilometer) thick — contains sheets of water ice and carbon dioxide arranged in alternating layers, like a cake. It’s topped off with a thin frosting of carbon dioxide ice, and scientists noticed something interesting: the massive ice deposit contains as much carbon dioxide as the entire Martian atmosphere.
Peter Buhler, a planetary scientist at NASA’s Jet Propulsion Laboratory led the new study. The team used computer simulations to map out the ice, and they were surprised at how closely their models matched with what Robert B. Leighton and Bruce Murray predicted decades ago.
“Usually, when you run a model, you don’t expect the results to match so closely to what you observe,” he said in a statement. “But the thickness of the layers, as determined by the model, matches beautifully with radar measurements from orbiting satellites.”
The ice cap puzzled researchers because according to science, it shouldn’t exist. That’s because water ice is more thermally stable and darker than carbon dioxide ice, which means that it should destabilize when layered between water ice.
However, the new model explains this behavior. Buhler and his team say there are three reasons why the frozen carbon dioxide exists. First, Mars wobbles as it orbits the sun, and when it does, the slight changing of the tilt alters the amount of sunlight that hits the ice. Second, each type of ice reflects the sun a bit differently. And lastly, because of the exposure to sunlight, the carbon dioxide sublimates–meaning it goes directly from a solid to a gas–which alters the atmospheric pressure.
As Mars wobbles, the amount of sunlight reaching the ice varies, causing the ice to form and then later sublimate. When the carbon dioxide ice was forming, water ice would’ve been trapped with it. But when that ice sublimated, the more stable water ice would have remained behind, forming the layers we now see at the south pole.
https://www.youtube.com/watch?v=8Gj8dr6AsYg
Mars’ climate, just like Earth’s, has changed over millions of years. To that end, not all of the carbon dioxide ice was lost; some were left behind to build up the varying layers we see—a process that has altered the red planet’s atmospheric pressure.
This is what Leighton and Murray hypothesized back decades ago, and this is what Buhler’s new model shows.
“Our determination of the history of Mars’s large pressure swings is fundamental to understanding the evolution of Mars’s climate, including the history of liquid water stability and habitability near Mars’s surface,” Buhler said in a statement.
By understanding what processes formed the south polar ice cap, scientists can better understand more of what happened in Mars’ history.
News
NHTSA probes 2.9 million Tesla vehicles over reports of FSD traffic violations
The agency said FSD may have “induced vehicle behavior that violated traffic safety laws.”
The U.S. National Highway Traffic Safety Administration (NHTSA) has opened an investigation into nearly 2.9 million Tesla vehicles over potential traffic-safety violations linked to the use of the company’s Full Self-Driving (FSD) system.
The agency said FSD may have “induced vehicle behavior that violated traffic safety laws,” citing reports of Teslas running red lights or traveling in the wrong direction during lane changes.
As per the NHTSA, it has six reports in which a Tesla with FSD engaged “approached an intersection with a red traffic signal, continued to travel into the intersection against the red light and was subsequently involved in a crash with other motor vehicles in the intersection.” Four of these crashes reportedly resulted in one or more major injuries.
The agency also listed 18 complaints and one media report which alleged that a Tesla operating with FSD engaged “failed to remain stopped for the duration of a red traffic signal, failed to stop fully, or failed to accurately detect and display the correct traffic signal state in the vehicle interface.”
Some complainants also alleged that FSD “did not provide warnings of the system’s intended behavior as the vehicle was approaching a red traffic signal,” as noted in a Reuters report.
Tesla has not commented on the investigation, which remains in the preliminary phase. However, any potential recall could prove complicated since the reported incidents likely involved the use of older FSD (Supervised) versions that have already been updated.
Tesla’s recent FSD (Supervised) V14.1 update, which is currently rolling out to drivers, is expected to feature significantly improved lane management, intersection handling, and overall driving accuracy, reducing the chances of similar violations. It should also be noted that Tesla maintains that FSD is a supervised system for now, and thus, is not autonomous yet.
While autonomous systems face scrutiny, NHTSA’s own data highlights a much larger danger on the road from human error. The agency recorded 3,275 deaths in 2023 caused by distracted driving due to activities like texting, talking, or adjusting navigation while operating a vehicle manually. It is also widely believed that a good number of traffic violations are unreported due to their frequency and ubiquity.
News
Tesla quietly files for Model Y+ in China, and its range numbers could be wild
The upcoming variant was listed in the Ministry of Industry and Information Technology’s (MIIT) public catalog.
Tesla has filed for regulatory approval of a new Model Y+ in China, hinting at a long-range update to its best-selling crossover SUV.
The upcoming variant was listed in the Ministry of Industry and Information Technology’s (MIIT) public catalog.
Mirroring Model 3+ Range
Based on the MIIT’s catalog, the Model Y+ will feature a 225 kW/302 horsepower single-motor setup. It will also feature ternary LG Energy Solution batteries, similar to the long-range Model 3+, which was launched earlier this year. The vehicle is expected to offer around 800 kilometers of CLTC range, potentially making it the longest range Model Y in Tesla China’s lineup.
The new Model Y+, identified under model number TSL6480BEVBR0, retains the same five-seat configuration and dimensions as the current Model Y. Though Tesla has not yet confirmed official range figures, industry observers expect it to be quite similar to the Model 3+’s 830-kilometer CLTC performance, as noted in a CNEV Post report.
Intensifying Competition
Tesla’s filing comes amid intensifying domestic competition in China. The U.S. EV maker sold 57,152 vehicles in August, down nearly 10% year-on-year, though up almost 41% from July’s 40,617 units, as noted by data from the China Passenger Car Association (CPCA). Still, the Model Y+ could help Tesla regain traction against strong local players by offering class-leading range and improved efficiency, two factors that have become a trademark of the electric vehicle maker in China.
Tesla’s experience with the Model 3+, which received a RMB 10,000 price cut within a month of launch, suggests that raw range numbers alone may not guarantee stronger sales. With this in mind, the rollout of features such as FSD could prove beneficial in boosting the company’s sales in the country.
One notable investor that many people will recognize said today on X that he does not understand Tesla shorts, otherwise known as $TSLAQ, and he’s giving some interesting reasons.
Martin Shkreli was long known as “Pharmabro.” For years, he was known as the guy who bought the rights to a drug called Daraprim, hiked the prices, and spent a few years in Federal prison for securities fraud and conspiracy.
Shkreli is now an investor who co-founded several hedge funds, including Elea Capital, MSMB Capital Management, and MSMB Healthcare. He is also known for his frank, blunt, and straightforward responses on X.
His LinkedIn currently shows he is the Co-Founder of DL Software Inc.
One of his most recent posts on X criticized those who choose to short Tesla stock, stating he does not understand their perspective. He gave a list of reasons, which I’ll link here, as they’re not necessarily PG. I’ll list a few:
- Fundamentals always have and will always matter
- TSLAQ was beaten by Tesla because it’s “a great company with great management,” and they made a mistake “by betting against Elon.”
- When Shkreli shorts stocks, he is “shorting FRAUDS and pipe dreams”
After Shkreli continued to question the idea behind shorting Tesla, he continued as he pondered the mentality behind those who choose to bet against the stock:
“I don’t understand ‘TSLAQ.’ Guy is the richest man in the world. He won. It’s over. He’s more successful with his 2nd, 3rd, and 4th largest companies than you will ever be, x100.
You can admit you are wrong, it’s just a feeling which will dissipate with time, trust me.”
i dont understand “$TSLAQ”. guy is the richest man in the world. he won. it’s over. he’s more successful with his 2nd, 3rd and 4th largest companies than you will ever be, x100.
you can admit you are wrong, it’s just a feeling which will dissipate with time, trust me. https://t.co/dkqrISCldp
— Martin Shkreli (@MartinShkreli) October 8, 2025
According to reports from both Fortune and Business Insider, Tesla short sellers have lost a cumulative $64.5 billion since Tesla’s IPO in 2010.
Shorts did accumulate a temporary profit of $16.2 billion earlier this year.
NHTSA probes 2.9 million Tesla vehicles over reports of FSD traffic violations
Tesla quietly files for Model Y+ in China, and its range numbers could be wild
‘I don’t understand TSLAQ:’ notable investor backs Tesla, Elon Musk
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