Scientists look to GPS as a tool to measure ocean currents from space

By Kelly Hodgkins Published March 1, 2016

When someone mentions GPS, most people immediately think navigation, but the technology has a utility that extends far beyond car trips and workout tracking. New research from a team of scientists at the National Oceanography Centre (NOC) suggests GPS could be used to improve our understanding of oceanography by measuring sea levels and ocean currents.

The technology developed by the NOC scientists uses GPS signals as a parameter to measure ocean surface heights. The team uses GNSS-Reflectometry, a technology that measures the reflection of satellite-based navigation signals, including GPS, off an object. GNSS-R data previously has been used to measure wind speed, but in this project, the scientists are using these GPS reflections to measure sea surface height. “We are really encouraged by our results since it demonstrates for the first time that we are able to map the overall sea surface height from space using the GPS-reflections technique,” said NOC scientist Dr. Paolo Cipollini.

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Currently, ocean surface height is measured from space using radar altimeters. Though accurate, there are not enough satellite altimeters in orbit to be able to measure at a scale below 100km. GNSS-Reflectometry receivers can measure changes on this small scale, providing a significant benefit over existing satellite altimeters. GNSS-Reflectometry receivers also can be connected a constellation, potentially providing scientists with a thirty-fold improvement in the amount of data gathered.

Several of these GNSS satellite transmitters are already in orbit and others can be deployed quickly and affordably as the technology matures. Later this year, NASA plans to launch a constellation of GNSS-Reflectometry receivers as part of the NASA CYGNSS mission. The team hopes to improve the technology, moving it beyond surface height and eventually using it to map currents by measuring the slopes currents cause on the ocean’s surface. The project is a joint collaboration between the NOC, the University of Michigan and the Jet Propulsion Laboratory. A summary of the results was published recently in the journal Geophysical Research Letters.

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Kelly's been writing online for ten years, working at Gizmodo, TUAW, and BGR among others. Living near the White Mountains of…

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Zoox recalls robotaxis after Las Vegas crash, citing software fix

Amazon's self-driving vehicle unit, Zoox, has issued a voluntary safety recall after one of its autonomous vehicles was involved in a minor collision in Las Vegas. The incident, which occurred in April 2025, led the company to investigate and identify a software issue affecting how the robotaxi anticipates another vehicle’s path.
The recall, affecting 270 Zoox-built vehicles, was formally filed with the National Highway Traffic Safety Administration (NHTSA). Zoox said the issue has already been addressed through a software update that was remotely deployed to its fleet.
Zoox’s robotaxis, which operate without driving controls like a steering wheel or pedals, are part of Amazon’s entry into the autonomous driving space. According to Zoox’s safety recall report, the vehicle failed to yield to oncoming traffic while making an unprotected left turn, leading to a low-speed collision with a regular passenger car. While damage was minor, the event raised flags about the system’s behavior in complex urban scenarios.
Establishing safety and reliability remain key factors in the deployment of the relatively new autonomous ride-hailing technology. Alphabet-owned Waymo continues to lead the sector in both safety and operational scale, with services active in multiple cities including Phoenix and San Francisco. But GM’s Cruise and Ford/VW-backed Argo AI were forced to abandon operations over the past few years.
Tesla is also expected to enter the robotaxi race with the launch of its own service in June 2025, leveraging its Full Self-Driving (FSD) software. While FSD has faced heavy regulatory scrutiny through last year, safety regulations are expected to loosen under the Trump administration.
Zoox, which Amazon acquired in 2020, says it issued the recall voluntarily as part of its commitment to safety. “It’s essential that we remain transparent about our processes and the collective decisions we make,” the company said in a statement.

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Mitsubishi’s back in the EV game—with a new electric SUV coming in 2026

mitsubishi bev 2026 momentum 2030 line up

Mitsubishi is officially jumping back into the U.S. electric vehicle scene—and this time, it’s not just dipping a toe. The company confirmed it will launch a brand-new battery-electric SUV in North America starting in summer 2026, marking its first fully electric model here since the quirky little i-MiEV left the stage back in 2017.
The new EV will be a compact crossover, and while Mitsubishi is keeping most of the juicy details under wraps, we do know it’ll be based on the same next-gen platform as the upcoming Nissan Leaf. That means it’ll ride on the CMF-EV architecture—the same one underpinning the Nissan Ariya—which supports ranges of up to 300+ miles. So yeah, this won’t be your average entry-level EV.
Designed in partnership with Nissan, the new model will be built in Japan and shipped over to U.S. shores. No word yet on pricing, battery size, or even a name, but Mitsubishi has made it clear this EV is just the beginning. As part of its “Momentum 2030” plan, the company promises a new or updated vehicle every year through the end of the decade, with four electric models rolling out by 2028. And yes, one of those might even be a pickup.
Mitsubishi says the goal is to give customers “flexible powertrain options,” which is marketing speak for: “We’ll have something for everyone.” So whether you're all-in on electric or still into gas or hybrid power, they're aiming to have you covered.
This mystery EV will eventually sit alongside Mitsubishi’s current U.S. lineup—the Outlander, Outlander PHEV, Eclipse Cross, and Outlander Sport—and help the brand move beyond its current under-the-radar status in the electric world.
In short: Mitsubishi’s finally getting serious about EVs, and if this new SUV lives up to its potential, it might just put the brand back on your radar.

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Toyota unveils 2026 bZ: A smarter, longer-range electric SUV

toyota bz improved bz4x 2026 0007 1500x1125

Toyota is back in the electric SUV game with the 2026 bZ, a major refresh of its bZ4X that finally delivers on two of the biggest demands from EV drivers: more range and faster charging.
The headline news is the improved driving range. Toyota now estimates up to 314 miles on a single charge for the front-wheel-drive model with the larger 74.7-kWh battery—about 60 miles more than the outgoing bZ4X. All-wheel-drive variants also get a boost, with up to 288 miles of range depending on trim.
Charging speeds haven’t increased in terms of raw kilowatts (still capped at 150 kW for DC fast charging), but Toyota has significantly improved how long peak speeds are sustained. With preconditioning enabled—especially helpful in colder weather—the new bZ can charge from 10% to 80% in about 30 minutes. Also new: Plug and Charge support for automatic payment at compatible stations and full adoption of the North American Charging Standard (NACS), meaning access to Tesla Superchargers will be standard by 2026.
Under the hood, or rather the floor, Toyota has swapped in higher-performance silicon carbide components to improve efficiency and power delivery. The AWD version now produces up to 338 horsepower and sprints from 0–60 mph in a brisk 4.9 seconds.
Toyota didn’t stop at just the powertrain. The exterior has been cleaned up, with body-colored wheel arches replacing the black cladding, and a sleeker front fascia. Inside, a larger 14-inch touchscreen now houses climate controls, giving the dash a more refined and less cluttered appearance. There’s also more usable storage thanks to a redesigned center console.
With the 2026 bZ, Toyota seems to be responding directly to critiques of the bZ4X. It’s faster, more efficient, and more driver-friendly—finally bringing Toyota’s EV efforts up to speed.