Technologies

A Fusion Energy Breakthrough? Watch Live as US Scientists Make Major Announcement

A fusion reactor at Lawrence Livermore National Laboratory may have reached a critical milestone.

Scientists at Lawrence Livermore National Laboratory may have achieved a remarkable new high point for fusion reactions, generating even more energy than was pumped in during a recent experiment, according to a report by the Financial Times.

The publication suggests scientists «with knowledge of preliminary results from a recent experiment» have discussed the result and analysis is ongoing. A major announcement is scheduled to take place at LLNL on Tuesday, Dec. 13. It’s expected to be livestreamed by the Department of Energy at approximately 7 a.m. PT.

The National Ignition Facility operates an «inertial confinement fusion» experiment, which sees almost 200 lasers fired directly at a tiny capsule of hydrogen. According to Nathan Garland, a physicist at Griffith University in Australia, the lasers create a plasma around the capsule which eventually starts an implosion — these conditions allow for fusion reactions to take place.

Fusion is the reaction that powers our sun and it works by smashing two atoms together. This requires extreme pressure and extreme heat but trying to recreate the conditions in a lab is «super difficult,» noted Garland.

The energy released by fusing two atoms together is massive and, importantly, releases no carbon dioxide. Unlike fission — splitting atoms — used in nuclear power plants, fusion also leaves behind no radioactive waste and there’s no risk of meltdown, either. In short, if we could harness fusion power, it would revolutionize energy, allowing us to generate clean power without pumping greenhouse gases into the atmosphere.

If the FT report and chatter on social media is correct, scientists at LLNL could have achieved «fusion energy gain» which is denoted by the letter Q. In a fusion experiment, if Q > 1, then we’re on our way to a bona fide energy breakthrough, one that scientists have long been dreaming of reaching. «It is a big deal for sure, if true,» Garland said.

But, as with all science, it’s good to be cautious and not overhype results yet to be fully analyzed. We have been here before, after all. In 2013, reports swirled the NIF had achieved this exact feat. It wasn’t the case.

In more recent times, though, NIF has taken big strides toward achieving the goal. In August 2021, researchers reported they had, for a brief moment, re-created the power of the sun in a self-sustaining reaction. That’s a good pedigree and one that makes us here at CNET Science feel a little more confident in the rumors.

A spokesperson for LLNL told CNET «our analysis is still ongoing, so we’re unable to provide details or confirmation at this time» and provided a link to the media advisory — which, in all caps, suggests a «MAJOR SCIENTIFIC BREAKTHROUGH.»

The result won’t mean that we suddenly have an endless supply of energy. It’s likely the reaction that took place at NIF lasted for just a fraction of a second or even less. But this is the first step in a journey toward fusion energy as a viable, serious technology to power our world. It provides a proof of concept that fusion experiments like this can reach Q > 1.

So while I’m always cautious about throwing around the word «breakthrough» when reporting on cutting-edge science — especially in the realm of fusion energy — it does feel like it might be justified here. We’ll have to wait and see.

Updated Dec. 12: Changed sentence to «smashing two atoms together» rather than «heavy» atoms because hydrogen is, of course, a very light atom.

Technologies

The Most Exciting Video Game Rumors and Leaks Ahead of 2026

Technologies

Today’s NYT Mini Crossword Answers for Wednesday, Dec. 17

Here are the answers for The New York Times Mini Crossword for Dec. 17.

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.

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.

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 to those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Nod (off)
Answer: DOZE

5A clue: Naval submarine in W.W. II
Answer: UBOAT

7A clue: Tricky thing to do on a busy highway
Answer: MERGE

8A clue: Heat-resistant glassware for cooking
Answer: PYREX

9A clue: Put into groups
Answer: SORT

Mini down clues and answers

1D clue: Break up with
Answer: DUMP

2D clue: Falls in line, so to speak
Answer: OBEYS

3D clue: Legendary vigilante who cuts a «Z» with his sword
Answer: ZORRO

4D clue: Rarin’ to go
Answer: EAGER

6D clue: Common reminder for an upcoming appointment
Answer: TEXT

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

Technologies

You Can Watch an Exclusive Avatar: Fire and Ash Scene on TikTok Right Now

Disney and TikTok partner on an immersive content hub for James Cameron’s latest movie about the alien Na’vi.

If you’re not quite ready to head to the theater to watch Avatar: Fire and Ash, an exclusive scene preview might sell you on the visual spectacle. As part of a new collaboration with the social media giant, Disney is posting snippets of its new movie to its TikTok account.

This scene isn’t part of any trailer and won’t be posted to other social media accounts, making TikTok the only place you can view it — unless you buy a movie ticket. A first look at the new movie’s scenes isn’t the only Avatar-related bonus on the social media platform right now, either. TikTok has partnered with the house of mouse to bring an entire «immersive content hub» to the app.

A special section of TikTok includes quizzes and educational videos that explore the alien world of Pandora shown off in the movies. On TikTok, you can take a personality quiz to find out what Na’vi clan you most closely align with and unlock a special profile picture border to use on your account.

Science and fiction blend together with a series of videos from real doctors who explain the basis for some of Avatar’s world-building. If you want to learn about exoplanets or how realistic the anatomy of the movie’s alien animals is, these videos will feed your brain while still providing entertainment value.

Perhaps the most enticing part of Disney’s latest social media collaboration is the opportunity for fans to win prizes and trips. TikTok creators who make edits with the #TikTokAvatarContest hashtag are entered into a competition to win Avatar merchandise. The biggest winners will be able to take a trip to visual effects studio Wētā Workshop in New Zealand or visit Avatar director James Cameron’s Lightstorm Entertainment Studio in Los Angeles.

Avatar: Fire and Ash is the third installment in director Cameron’s cinematic passion project. While the first Avatar movie was released in 2009, Cameron didn’t release another entry in the franchise until 2022. In total, there is a five-movie arc planned for the indigo alien Na’vi on the moon of Pandora.

The Avatar movies are known for pushing the boundaries of CGI visual effects in cinema. They are also historically big winners at the box office: the original Avatar is the highest-grossing film of all time, earning $2.9 billion across its theatrical releases. Its sequel, Avatar: The Way of Water, is the third-highest-grossing film of all time, trailing Avengers: Endgame. You can stream those movies on Disney Plus.

It remains to be seen whether Avatar: Fire and Ash will financially live up to its predecessors. The film currently has mixed reviews from critics on Rotten Tomatoes.