Technologies

‘Phenomenal breakthrough’: Nuclear fusion test sparks high-energy hopes

A laser blast in California creates a miniature sun for a tiny fraction of a second and ignites a self-sustaining chain reaction.

For an almost imperceptible fraction of a second on Aug. 8, massive lasers at a government facility in Northern California re-created the power of the sun in a tiny hot spot no wider than a human hair. The result is a significant step forward in the pursuit of nuclear fusion, a long-sought-after panacea for many energy and environmental challenges.

The experiment took place at the National Ignition Facility, which takes up the space of three football fields at the campus of the Lawrence Livermore National Laboratory on the eastern edge of the San Francisco Bay metroplex. Powerful lasers there were focused onto a target the size of a BB, resulting in a reaction that threw off over 10 quadrillion watts of power.

Remarkably, that’s about 6% of the total energy of all the sunshine striking Earth’s surface at any given moment, although the powerful burst only lasted for 100 trillionths of a second. Even in that minuscule timeframe, though, scientists observed a big breakthrough: The hotspot was able to ignite a self-sustaining chain reaction, fusing more hydrogen atoms together and continuing the process of energy generation, like an internal combustion engine burning through one molecule of fuel after another to keep going.

Achieving this ignition point is a key milestone in the roadmap to fusion power.

«This phenomenal breakthrough brings us tantalizingly closeto ademonstration of ‘net energy gain’ from fusion reactions — justwhenthe planet needs it,» said Arthur Turrell, physicist and author of The Star Builders: Nuclear Fusion and the Race to Power the Planet, in a statement.

Nuclear power plants today are fueled by thereaction from nuclear fission, the process of splitting atoms to createenergy. Fusion is just the opposite: merging hydrogen atomsinto helium the same way the sun does, releasing gobs of energy in theprocess. Fusion is a sort of holy grail, because theoretically it wouldprovide a limitless source of clean energy with fewer safety and wasteconcerns compared to fission reactors.

For decades now, dozens offacilities have been experimenting with different methods. The challenge isn’tjust to achieve fusion, but to do so in a way that doesn’t require moreenergy to create the reaction than is produced as a result.

This month’s experiment was still a net negative in terms of energy in versus energy out, but it puts the science on the threshold of breaking even.

Lawrence Livermore National Laboratory reports that while a final analysis still needs to be peer reviewed, the initial data showed that the results yielded eight times the energy output of experiments done earlier this year and 25 times that seen in 2018.

«For reference this [is] about 1000x more energy output than we were getting when I joined the project 10 years ago,» project physicist Jayson Luc Peterson added on Twitter.

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Jeremy Chittenden, co-director of the Center for Inertial Fusion Studies at Imperial College London, said in a statement that improvement in fusion energy output has accelerated over the past year, «suggesting we may soonreach moreenergy milestones, such as exceeding the energy input fromthe lasersused to kick-start the process.»

Interestingly, the National Ignition Facility is not primarily meant as a tool for fusion energy development, but rather for nuclear weapons research. Chittenden says the result should spur on other efforts focused on creating clean power.

«We have now proven it is possible to reach ignition, givinginspiration to other laboratories and start-ups around the world workingon fusion energy production to try to realize the same conditionsusinga simpler, more robust and above all cheaper method.»

Technologies

Today’s NYT Mini Crossword Answers for Friday, April 25

Here are the answers for The New York Times Mini Crossword for April 25.

Looking for the most recent Mini Crossword answer? Click here for today’s Mini Crossword hints, as well as our daily answers and hints for The New York Times Wordle, Strands, Connections and Connections: Sports Edition puzzles.

Today’s NYT Mini Crossword is a pretty easy one. 9-Across — the «dog-tor» clue — was a bit of a groaner, but I’ll take an easy answer over a witty, confusing clue any day. 4-Down was a little confusing, but once I filled in the other letters it made sense. (TEXAS and IOWA could’ve fit in 5-Across and 8-Across, with one T replaced in each answer.) Need some help with today’s Mini Crossword? Read on. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

The Mini Crossword is just one of many games in the Times’ games collection. If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get at those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: «Beware the ___ of March»
Answer: IDES

5A clue: Sends a message
Answer: TEXTS

7A clue: Pond scum
Answer: ALGAE

8A clue: Teeny-tiny bit
Answer: IOTA

9A clue: Doctor who might more aptly be called a «dogtor»
Answer: VET

Mini down clues and answers

1D clue: «Don’t call ___ comeback!»
Answer: ITA

2D clue: Supermarket section
Answer: DELI

3D clue: Arnold Schwarzenegger or Chris Christie, e.g., for short
Answer: EXGOV

4D clue: 5-Across or 8-Across, if you change the T’s in this answer
Answer: STATE

6D clue: Musical chairs need
Answer: SEAT

How to play more Mini Crosswords

The New York Times Games section offers a large number of online games, but only some of them are free for all to play. You can play the current day’s Mini Crossword for free, but you’ll need a subscription to the Times Games section to play older puzzles from the archives.

Technologies

Razer Releases a Vertical Edition Ergonomic Mouse

Two new mice for productivity still look like they were made for gamers, and that’s okay.

Razer has unveiled the Pro Click V2 and the Pro Click V2 Vertical Edition — two PC mice with ergonomics in mind, complete with expected Razer Chroma RGB LEDs in tow. The latter mouse, revealed Thursday, is Razer’s first vertical mouse and is priced to go head to head with the likes of Logitech’s vertical mouse offerings like the Lift and MX Vertical.

As with almost any new tech product in 2025, the new Pro Click V2 mice will also ship with artificial intelligence features in the form of Razer’s AI Prompt Master, a productivity feature that will give you easier access to services like Microsoft Copilot.

Both mice are available starting Thursday for $100 for the V2, and $120 for the V2 vertical mouse.

Razer is going for a «do it all» mouse with the Pro Click V2

The Pro Click V2 and Pro Click V2 Vertical editions are shaped to fit your hand’s natural resting positions, making it more comfortable and easier to use for long periods of time. The Pro Click V2 is designed at a 30-degree angle and the Pro Click V2 Vertical is tilted at 71.7 degrees, which Razer says is the natural angle of a handshake.

Of course, these are «productivity meets gaming» mice, so you can also expect a host of Razer features that you’d find on its gaming mice offerings. That said, the updated mice do feel more gaming forward than their predecessors. Both include the Razer Focus Pro 30K Optical Sensors for ultra precision and the mice should be able to track easily on glass. The mechanical buttons are said to be up to 6x more durable than the industry average and should be able to take 60 million clicks in their lifecycles.

Both mice received the RGB treatment, with multi-zone lighting that can be customized further with Razer’s Synapse software. There you can also adjust DPI setting defaults and more.

Lastly, both mice should last a long time on a single charge: the Pro Click V2 offers up 3.5 months of battery life while the Vertical Edition can reach up to six months before needing to be charged again. Both mice can be charged via USB-C, and a 5-minute charge can give you 2 to 3 days of battery power when you’re in a pinch.

For more, don’t miss how tariffs are boosting the secondhand tech product market.