Technologies
Huge ancient lake on Mars could be hiding fossilized signs of alien life
An ancient river delta at the site where NASA’s Perseverance rover landed might hold proof of past life on Mars.

Mars rovers may soon get a few new checkpoints to explore. Geologists say specific areas of an ancient river delta near where NASA’s Perseverance rover is stationed could hold fossilized evidence of extraterrestrial life.
Though they don’t expect to find any bug-eyed, green aliens, they do say vital organic compounds that suggest the presence of past life might exist there, waiting to be uncovered.
The crew of researchers behind the new study, published on Oct. 7 in the journal Science, dissected photographs taken by NASA’s recently landed Perseverance rover and uncovered ways that water flowed on Mars billions of years ago.
Their analysis unveiled spots on the arid orb that could house the highly sought-after biosignatures.
«We know that water was running on the surface at one point in the past, but we don’t know the duration of this activity,» said the study’s lead author, Nicolas Mangold, a geologist at the University of Nantes in France.
NASA’s Perseverance and the legend of Jezero
Once upon a time in space, Mars wasn’t a dry and dangerous world. It was covered in fresh rivers and lakes, a lot like those on Earth. And where there’s water, there could be life.
The vast bodies of H2O dried up eons ago as the formerly blue planet’s delicate atmosphere disappeared. This turned the environment into the inhospitable land we’ve come to know today.
Scientists have long been intrigued by the past existence of water on Mars. That’s why NASA sent Perseverance to traverse the planet in hopes of finding fingerprints of life. More specifically, they sent the rover to a huge crater called Jezero.
Believed to have once been flooded by water, the Jezero crater houses an ancient river delta — a delta that could be holding signs of alien life.
Deltas are landforms generated by rock and sediment swept up by a river’s flow. That stream often carries organic molecules and bacteria in its path, which means Jezero’s delta could easily contain an accumulation of such materials.
In other words, it could contain fossilized building blocks of life.
With that in mind, the study team’s proposed points of interest for locating evidence of life on Mars are all anchored by that delta. Initially, Mangold says, he hoped Perseverance would catch clear images of the spot, but unfortunately, Percy is a bit too far from the old river for that.
«Despite our disappointment,» he said, «we tried to look at the delta from a distance using our best cameras, and that gave really wonderful results.»
Clues from Kodiak
Surprisingly, the researchers didn’t find the prized areas just by analyzing Jezero’s main delta. They observed a nearby butte, or mound of rock, dubbed Kodiak. Kodiak is a part of the delta that’s slightly farther away.
«You can imagine that the delta was a little bit extended to the south and to the east, then erosion removed some of the material,» said Mangold. «But Kodiak is, by miracle, preserved.»
Kodiak serves as a geologic representation of the main river delta’s features. The stratigraphy, its rock layers, is relatively easy to see from afar, according to the researchers.
«By understanding the stratigraphy at Kodiak, it enables us to identify the deposits which are the most likely of interest for life preservation,» Mangold said.
He described the team’s first look at the photos as a «shock.»
«The first image is actually [one] where we can see boulders,» he said. «A delta fault … is not supposed to get some big boulders. It’s supposed to be consistent.»
Those boulders, he said, mean Jezero’s river delta is what’s called a Gilbert-type delta. These are formed with stronger water flow such as waves and tides, like that found in a lake. Thus, the team believes the river’s flow suddenly grew more intense during the course of its life.
«A big question for us,» Mangold said, «is to understand why there was this change of hydrological activity, because that is probably the signature of a change of climate.»
Kodiak also offered insight into how high the ancient body of water rose. Mangold says it would’ve been about 8,202 feet (2,500 meters) high, based on striations of rocks in the butte. That elevation varied over time, he says, which is also consistent with the idea the river advanced into a lake.
«That kind of observation is really key,» he explained. «Because it shows that there was a lake in Jezero, no doubt about that … in addition, the change from horizontal bedding to the faults, which are deep in layers, indicates the past water level.»
In the end, all this knowledge led Mangold’s team to isolate places where remnants of life could be found — deeper layers of Kodiak that likely have mud-dominated residue as well as sand grains. These types of sediments have been known to contain organic, life-sustaining molecules.
«Kodiak is not easily accessible by the rover because it’s a bit vertical facing,» Mangold noted.
«But we have identified some locations on the main delta fault where we can access similar types of layers. Those locations are some of our preferred targets for future rover travels.»
Technologies
Coinbase Reveals Over 69,000 People Had Their Data Exposed in a Breach. Take These Steps Now
Coinbase refused to pay the $20M ransom for data that included names, emails and partial Social Security numbers. However, the company will cover any losses incurred.

Coinbase, the largest cryptocurrency exchange in the US, revealed in a notice to the Maine attorney general’s office that 69,461 people were affected by last week’s data breach by extortionists.
Login credentials, two-factor authentication codes and private keys were not exposed in the breach, nor were the bad actors able to gain individual account access to investors’ funds. But cybercriminals are in possession of the following:
- Names
- Addresses
- Phone numbers
- Emails
- Partial Social Security numbers
- Masked bank-account numbers
- Government ID images like driver’s licenses and passports
- Account data, including snapshots and transaction history
In an SEC filing, Coinbase said that the threat actors paid overseas contractors in support roles for internal sensitive information. That info was then used to create a social engineering attack, demanding that Coinbase pay $20 million or the information would be released. Coinbase refused to pay.
«Instead of funding criminal activity, we have investigated the incident, reinforced our controls, and will reimburse customers impacted by this incident,» the company said in its statement. The company is cooperating with law enforcement and has set up a $20 million reward fund for information leading to the hackers’ arrest.
Some Reddit users have reported receiving unsolicited password reset messages as early as last week. It’s unclear if the messages are tied to the data breach, but if you receive an unprompted password reset message, it should always send up a red flag. CNET reached out to Coinbase for comment, but the company did not immediately respond.
Do this now to secure your crypto and data
While Coinbase has said that your seed phrase and investment account are safe, this breach exposed a lot of other sensitive information. Take these steps now to ensure your personal information is secure.
Use a cold crypto wallet
If you invest in crypto regularly, a cold crypto wallet — which is not connected to the internet and has to be manually plugged into your computer to access — can keep your digital currency secure in the event an exchange is breached.
Freeze your credit reports
You should freeze your credit reports and even consider locking your SSN, to prevent bad actors from making use of any of the information that was exposed. But beware of phishing attacks that aim to trick you into giving up sensitive data willingly.
Danni Santana, CNET’s identity theft editor, tested freezing his credit last year and said, «It’s worth the hassle of setting up accounts with all three major credit bureaus. I get peace of mind at zero cost to me.»
Alert your bank
If even partial bank account information was exposed, contact your bank and let them know. You can request a new checking or savings account. Even if the entire account number wasn’t revealed, it’s still best to err on the side of caution.
Sign up for a free identity theft and credit monitoring service
There are free services you can sign up for that will monitor your credit reports and the dark web for any of your personal identifying information. While these services won’t take action on your behalf, they can alert you so that you’re able to take action.
There are also paid identity theft protection services available that offer much better protection features. Some of these, like Aura, include identity theft restoration services in the event your identity is stolen and up to $1 million in identity theft insurance.
Technologies
Ultron, Jeff-nado and New Tactics Mode: There’s a Lot Riding on Marvel Rivals Season 2.5
The midseason update adds a new strategist to the roster and brings an experimental autobattler mode to Rivals.

Marvel Rivals season 2 is approaching its midseason update next week, and today we got our first glimpse of some of the changes coming to the game.
The Marvel Rivals Season 2.5 update is a much-needed refresh for Rivals, which has struggled with declining Steam player numbers all season (not the full picture, but currently down to about one-third of the average players compared with January) and a player base that’s grown increasingly frustrated with one another.
What’s the cure for all this? Adding one of the most-anticipated new heroes and also leaning full bore into the zaniness by letting Storm and Jeff the Landshark team up to create a Jeff-nado.
Here’s what we learned about the Marvel Rivals season 2.5 update from today’s developer vision video.
Marvel Rivals season 2.5 start date
Season 2.5 kicks off next Friday, May 30, UTC. We don’t have an exact start time, but for these major season updates the game tends to go offline in the middle of the night ET/PT and come back online in the wee hours of the launch date.
New hero: Ultron
Officially announced at the start of season 2, Ultron joining the roster as a strategist might have been the most well-known «secret» that Rivals has been hiding since launch. If you’d asked me last year which role Ultron was most likely to slot into, I would’ve guessed duelist or vanguard, but a free-flying strategist with unique healing mechanics is a welcome change of pace for the role.
Ultron’s video preview shows us a strategist who can leap in the air to escape divers and who has an attack range to take on enemy fliers. This could make him a great counter-pick to certain enemy comps, but we’ll have to wait for his full kit details to know for sure.
I’d love to see more strategists with unique mechanics like Loki’s clones or Invisible Woman’s shields — as much as I enjoy the shoot-to-heal strategist gameplay, I think the game’s in a better place when there’s more variety in the roster. So I’m likewise glad to see that Ultron’s ultimate isn’t another variation of «big heals in a circle» like most strategists’ ultimates — instead Ultron shoots a series of rapid-fire beams that heal allies and damage enemies.
It’s no Loki Doppelganger, but it’s something different.
New map: Arakko
As usual, the midseason update adds a new map alongside the new hero — this time, we’re getting Arakko, the former sister island of Krakoa (season 2.0’s new map), which has been mechanized by X-tron, the version of Ultron that was reborn through Krakoa’s resurrection chamber. The map appears to be a payload map — convoy or possibly convergence — with heroes escorting the objective toward a lore-relevant destination.
A bunch of new team-ups and balance changes
The Rivals midseason patch is surprisingly hefty according to the latest developer vision video. The game is adding six new teamups, including a new one between Iron Man and Ultron, as well as two new team-ups for Jeff — the aforementioned Jeff-nado, plus the ability to use Venom’s symbiote to shoot healing tendrils onto (into?!) allies. Luna Snow can also give Hawkeye a stunning ice arrow, Rocket and Peni power up each other’s deployable abilities, and Punisher gives Black Widow’s rifle a piercing upgrade.
In exchange, season 2.5 will say goodbye to four previous team-ups, including the notorious Symbiote Bond wherein Venom players gave Spider-Man and Peni Parker an extra damage burst to help melt your backline. Also leaving are Luna Snow and Jeff’s ice combo, Hawkeye and Black Widow’s afterimage team-up and Ammo Overload for Rocket and Punisher. In addition, Iron Man will no longer benefit from a team-up with Hulk (though Namor still does).
Rivals devs also addressed the current metagame, framing it as a «rock-paper-scissors dynamic» among mobile dive compositions (Cap, Iron Fist, Human Torch), wall-and-brawl comps (Groot paired with other mid-to-close-range heroes like Thing, Winter Soldier and Mister Fantastic) and triple-strategist compositions. It doesn’t feel like the fairest analogy, as the devs pointed to both of the latter comps as countering the high mobility comps, rather than being a true (theoretical) rock-paper-scissors where each composition is strong against one alternative and weak to another.
Still, the developers are shaking things up in season 2.5 with balance changes, and the result is that Strange and Magneto are getting buffed while Groot, Cap and Emma Frost get hit with nerfs. Mobility-focused duelists Iron Fist, Human Torch and Psylocke are getting nerfs while Punisher, Storm and Squirrel Girl will receive «modest» buffs. The only strategist mentioned in the dev vision video’s upcoming balance tweaks was Luna Snow, whose ult charge gets another nerf, offset by a «mild boost» to her other abilities.
I’m a little worried about some of these changes on paper. Targeting overperforming heroes is fine, but buffs to heroes like Punisher and Squirrel girl feel risky. I’m not a fan of buffing «noobstomper» heroes into relevance, but I’ll wait until I see the details and how things feel in the game before I actually panic. It’s also a bit perplexing that Rivals devs seem focused on increasing ult charge requirements for Luna Snow instead of just making it last less than an eternity.
Other changes: New tactics mode, emoji
Perhaps the biggest surprise in the season 2.5 announcement was the addition of a new experimental mode called Ultron’s Battle Matrix Protocol. It’s an autobattler that lets you choose a team of six heroes, enhance their abilities, and unleash them against opposing teams. I have zero experience with autobattlers like Teamfight Tactics of Hearthstone Battlegrounds, but it was as fun watching a massive Venom looming over the battlefield as it was seeing a Namor with six (I counted) active turrets.
The game is also introducing emoji, finally allowing you to nonverbally express your disdain for the teammates begging for healing while Spider-Man and Iron Fist treat you like a punching bag.
Technologies
My Favorite Smartwatch Is Only $99 Today at Walmart Ahead of Memorial Day
The Galaxy Watch 4 smartwatch may not be the newest, but at $99, it’s basically a steal.

My phone pings constantly from where it’s plugged in across the room. But I’ve got my Galaxy Watch 4 on my wrist, so I can check to see who’s pinging me, which app the notifications are from, and whether it’s important enough to merit my standing up and walking the dozen or so steps to unplug my phone and look, or just respond on my smartwatch (or swipe the notification away).
Smartwatches are becoming more an more an essential tech item, but most people don’t need the latest and greatest version to get what they need out of it. One of the best ways to buy a thoughtful tech gift without spending too much money? Choose a previous version of a current device, especially if the earlier model offers everything they need. So if you’re searching for a cool gift for someone (or yourself), might I suggest my favorite smartwatch, the Samsung Galaxy Watch 4? Thanks to Walmart’s Memorial Day deals — its answer to Amazon’s Memorial Day Sale — the 40mm Samsung Galaxy Watch 4 is only $99 right now.
SMARTWATCH DEALS OF THE WEEK
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$210 (save $90)
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$200 (save $50)
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$510 (save $140)
Why I love the Samsung Galaxy Watch 4
Sure, it’s not the latest model of the Samsung Watch. That would be the Galaxy Watch 7 or Galaxy Watch Ultra. But it still has all the main features, including ECG, blood pressure monitoring, sleep monitoring, Google integration for most things and Samsung Health.
I’m not a fitness fanatic, so I don’t need all the latest tracking features or even the improved battery life and bigger screen size of the Watch 7, which has a list price of $300, but is going for just $209 right now if you do want the upgrade. The Galaxy Watch 4 has the fitness tracking I need without being overly complex. (Though it has advanced workout tracking for six modes including running, rowing and swimming, if you like those auto-detected tracking features.) For everyday use, I can check all my notifications and respond, take hands-free calls, track sleep and skip between songs when listening in Spotify. Oh, and check the time.
If you’re looking for a wearable, it’s the one I’d recommend checking out before looking into the latest version of the Galaxy Watch series. One caveat: Some people have complained that their battery is depleting quickly lately. Samsung has advice on how to run a diagnostic on your watch and remedy the issue.
Why the Galaxy Watch 4 makes a fun gift
The Galaxy Watch 4 isn’t going to be a gift you give to the tech enthusiast in your family, or an Apple fan, but it’s perfect for anyone who wants a smartwatch but doesn’t want all the bells and whistles on offer, or someone who doesn’t know what they want in a smartwatch at all. For more, here are our other favorite smartwatches. If you’re looking to gift someone a new phone, CNET has rounded up the best deals on the Samsung Galaxy S25.
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