Culiseta annulata mosquito, seen here in the United Kingdom's Stodmarsh Nature Reserve, as been found for the first time in Iceland.'/>The discovery of three Culiseta annulata mosquitoes was confirmed this week by the Natural Science Institute of Iceland, which said the mosquitoes likely arrived by freight.
(Image credit: Robert Pickett)
The "Danger Zone" singer is asking for his performance to be deleted from a fake "King Trump" video that the president posted to Truth Social on Saturday.
(Image credit: Jerod Harris)
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A stunning image of a rice weevil on a single grain of rice has won the 2025 Nikon Small World photomicrography contest, yielding valuable insight into the structure and behavior of—and providing a fresh perspective on—this well-known agricultural pest. The image was taken by Zhang You of Yunnan, China. Another of You's photographs placed 15th in this year's contest.
“It pays to dive deep into entomology: understanding insects’ behaviors and mastering lighting," You said in a statement. "A standout work blends artistry with scientific rigor, capturing the very essence, energy, and spirit of these creatures.”
There was an element of luck in creating his winning image, too. "I had observed rice weevils in grains before, but never one with its wings spread," You said. "This one was naturally preserved on a windowsill, perhaps in a final attempt to escape. Its tiny size makes manually preparing spread-wing specimens extremely difficult, so encountering it was both serendipitous and inspiring.”
Nikon's annual contest was founded back in 1974 "to showcase the beauty and complexity of things seen through the light microscope." Photomicrography involves attaching a camera to a microscope (either an optical microscope or an electron microscope) so that the user can take photographs of objects at very high resolutions. British physiologist Richard Hill Norris was one of the first to use it for his studies of blood cells in 1850, and the method has increasingly been highlighted as art since the 1970s. There have been many groundbreaking technological advances in the ensuing decades, particularly with the advent of digital imaging methods.
This year's competition received over 1,900 submissions from 77 countries; a panel of judges evaluated the submissions based on originality, informational content, technical proficiency, and visual impact. Featured below are the remaining top 20 winners of this year's contest, with subjects ranging from rat liver cells, sunflower trichomes, and slime molds releasing spores, to a moth laying eggs and a parasitic fungus invading a fly, among other microscopic marvels. You can check out the full list of winners, as well as several honorable mentions, here. The 2025 winners for the video competition can be found here.
On Wednesday, Anthropic released Claude Haiku 4.5, a small AI language model that reportedly delivers performance similar to what its frontier model Claude Sonnet 4 achieved five months ago but at one-third the cost and more than twice the speed. The new model is available now to all Claude app, web, and API users.
If the benchmarks for Haiku 4.5 reported by Anthropic hold up to independent testing, the fact that the company can match some capabilities of its cutting-edge coding model from only five months ago (and GPT-5 in coding) while providing a dramatic speed increase and cost cut is notable.
As a recap, Anthropic ships the Claude family in three model sizes: Haiku (small), Sonnet (medium), and Opus (large). The larger models are based on larger neural networks and typically include deeper contextual knowledge but are slower and more expensive to run. Due to a technique called distillation, companies like Anthropic have been able to craft smaller AI models that match the capability of larger, older models at functional tasks like coding, although it typically comes at the cost of omitting stored knowledge.
Claude 4.5 Haiku benchmark results from Anthropic.
That means if you wanted to converse with an AI model that might craft a deeper and more meaningful analysis of, say, foreign policy or world history, you might be better served talking to Sonnet or Opus (being aware that they can also be wrong and make things up). But if you just need quick coding assistance that's more about translation of concepts than general knowledge, Haiku might be the better pick due to its speed and lower cost.
And speaking of cost, Haiku 4.5 is included for subscribers of the Claude web and app plans. Through the API (for developers), the small model is priced at $1 per million input tokens and $5 per million output tokens. That compares to Sonnet 4.5 at $3 per million input and $15 per million output tokens, and Opus 4.1 at $15 per million input and $75 per million output tokens.
The model serves as a cheaper drop-in replacement for two older models, Haiku 3.5 and Sonnet 4. "Users who rely on AI for real-time, low-latency tasks like chat assistants, customer service agents, or pair programming will appreciate Haiku 4.5’s combination of high intelligence and remarkable speed," Anthropic writes.
Claude 4.5 Haiku answers the classic Ars Technica AI question, "Would the color be called 'magenta' if the town of Magenta didn't exist?"
On SWE-bench Verified, a test that measures performance on coding tasks, Haiku 4.5 scored 73.3 percent compared to Sonnet 4's similar performance level (72.7 percent). The model also reportedly surpasses Sonnet 4 at certain tasks like using computers, according to Anthropic's benchmarks. Claude Sonnet 4.5, released in late September, remains Anthropic's frontier model and what the company calls "the best coding model available."
Haiku 4.5 also surprisingly edges up close to what OpenAI's GPT-5 can achieve in this particular set of benchmarks (as seen in the chart above), although since the results are self-reported and potentially cherry-picked to match a model's strengths, one should always take them with a grain of salt.
Still, making a small, capable coding model may have unexpected advantages for agentic coding setups like Claude Code. Anthropic designed Haiku 4.5 to work alongside Sonnet 4.5 in multi-model workflows. In such a configuration, Anthropic says, Sonnet 4.5 could break down complex problems into multi-step plans, then coordinate multiple Haiku 4.5 instances to complete subtasks in parallel, like spinning off workers to get things done faster.
For more details on the new model, Anthropic released a system card and documentation for developers.
Rejecting opposition from the cable and real estate industries, California Gov. Gavin Newsom signed a bill that aims to increase broadband competition in apartment buildings.
The new law taking effect on January 1 says landlords must let tenants "opt out of paying for any subscription from a third-party Internet service provider, such as through a bulk-billing arrangement, to provide service for wired Internet, cellular, or satellite service that is offered in connection with the tenancy." It was approved by the state Assembly in a 75–0 vote in April, and by the Senate in a 30–7 vote last month.
"This is kind of like a first step in trying to give this industry an opportunity to just treat people fairly," Assemblymember Rhodesia Ransom, a Democratic lawmaker who authored the bill, told Ars last month. "It's not super restrictive. We are not banning bulk billing. We're not even limiting how much money the people can make. What we're saying here with this bill is that if a tenant wants to opt out of the arrangement, they should be allowed to opt out."
Ransom said lobby groups for Internet providers and real estate companies were "working really hard" to defeat the bill. The California Broadband & Video Association, which represents cable companies, called it "an anti-affordability bill masked as consumer protection."
Complaining that property owners would have "to provide a refund to tenants who decline the Internet service provided through the building's contract with a specific Internet service provider," the cable group said the law "undermines the basis of the cost savings and will lead to bulk billing being phased out."
Ransom argued that the bill would boost competition and said that "some of our support came from some of the smaller Internet service providers."
California's law fills a gap in federal rules. A Federal Communications Commission proposal to let tenants opt out of bulk billing was floated in March 2024 by then-FCC Chairwoman Jessica Rosenworcel, but not adopted.
When Rosenworcel proposed a federal opt-out rule last year, the FCC said it would "increase competition for communications service in these buildings by making it more profitable for competitive providers to deploy service in buildings where it is currently too expensive to serve consumers because tenants are required to take a certain provider's service." But the proposal was nixed in January 2025 by Chairman Brendan Carr, shortly after President Trump elevated Carr to the FCC's top slot.
If a California landlord offers bulk billing and fails to comply with the new law's opt-out requirement, the landlord's tenants will have the right to "deduct the cost of the subscription to the third-party Internet service provider from the rent." The law prohibits landlords from retaliating against tenants.
Bulk billing contracts are generally allowed by the FCC, except when they give a provider the exclusive right to access and serve a building. Landlords can still prevent other ISPs from installing wires in a building, though.
"While a service provider may not enter into an agreement that grants exclusive access to an MTE [multiple tenant environment] property, a landlord may still choose the providers it allows into the building, even if that means only one company provides service," the FCC says. While residents may still only have one choice for wired broadband, the California law could help fixed wireless Internet providers gain subscribers.
The California Broadband & Video Association told the Sacramento Bee that it is disappointed Newsom signed the bill "because we think it will be an impediment to utilizing an effective tool, bulk billing, that has helped middle class Californians be eligible for discounted rates to high-speed Internet. We will endeavor to do our best and continue to provide quality services at affordable rates."
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