Wel.nl

Minder lezen, Meer weten.

Oktober begint en maak deze fout niet bij het aanzetten van je verwarming

Overdag nog nazomer, 's nachts al flink fris: het stookseizoen staat voor de deur. Volgens Weeronline blijft het de komende dagen droog met middagtemperaturen rond de 20 graden, maar koelt het 's nachts af naar 8 tot 11 graden. In de loop van volgende week wordt het wisselvalliger en zakken de maxima richting 16 graden. Tijd om de verwarming aan te zetten? En vooral: hoe hoog?

Geen vaste datum

Een dag waarop de verwarming officieel aan moet, bestaat niet. Het hangt vooral af van je huis. In een goed geïsoleerde nieuwbouwwoning blijft het na een zonnige middag nog lang aangenaam. In een oudere, tochtige woning is het 's ochtends al snel kil.

Is het binnen te koud om nog prettig te zitten, wacht dan niet uit principe. Twijfel je nog? Zet de thermostaat dan op 15 graden als vangnet. Zakt de temperatuur 's nachts verder, dan springt de ketel bij. Op zonnige dagen hoeft hij niets te doen.

De duurste fout

Die zit 'm in wat er daarna gebeurt: bij de eerste koude ochtend de thermostaat meteen naar 21 of 22 graden draaien. Milieu Centraal adviseert om thuis niet hoger te gaan dan 19 graden, en als het kan nog een graad lager. Een trui of een dekentje op de bank maakt veel goed. Je bent niet de enige: ongeveer een op de drie huishoudens zet de thermostaat overdag al op 19 graden of lager.

Niet iedereen redt het met 19 graden. Ouderen, zieken en mensen die de hele dag stilzitten hebben het sneller koud, net als baby's. Dan mag het best een graadje meer zijn.

Zoveel scheelt het

Milieu Centraal rekende uit wat de belangrijkste stooktips opleveren in een matig geïsoleerde hoekwoning uit 1970, met een cv-ketel en twee bewoners, bij een gasprijs van €1,37 per kuub:

  1. Thuis niet hoger dan 19 graden: €170 per jaar
  2. Op 15 graden als er overdag niemand thuis is (vier dagen per week): €120 per jaar
  3. Verwarming op de slaapverdieping helemaal uit: €80 per jaar
  4. 's Nachts op 15 graden: €60 per jaar

Draai daarnaast de radiatoren uit in kamers waar je niet bent en houd de binnendeuren dicht. Heb je vloerverwarming of een volledig elektrische warmtepomp? Ga 's nachts dan niet lager dan 17 à 18 graden, anders duurt het te lang voordat het huis weer warm is.

Doe je nu nog niets van dit alles, dan kun je in zo'n huis volgens Milieu Centraal ongeveer 425 kuub gas per jaar besparen: bijna €600. De gasprijs ligt volgens de Consumentenbond inmiddels rond €1,49 per kuub. Betaal jij meer dan €1,37, dan levert elke tip nog meer op.

Ook de cv-ketel kan lager

Minder bekend: de ketel zelf kan vaak een tandje lager. Zet de aanvoertemperatuur, de temperatuur van het water dat naar je radiatoren gaat, op 50 of 60 graden. De ketel werkt dan zuiniger. Kijk wel of het huis nog lekker warm wordt. Let op: dat geldt niet voor het warme kraanwater. Dat moet minimaal 60 graden blijven, vanwege legionella.

Blijf ventileren

Zuinig stoken betekent niet dat alles dicht moet. Laat ventilatieroosters dag en nacht open, ook in de winter. Een ruimte die te ver afkoelt, is juist gevoelig voor condens en schimmel. In bijna een op de vijf woningen hebben bewoners daar nu al last van.

Bronnen: Milieu Centraal, Consumentenbond, Weeronline


Slashdot

News for nerds, stuff that matters

Error-Prone AI Nearly Sparked World War Three Last Month

In an op-ed for The Guardian, authors Timnit Gebru and Emily M. Bender argue that policymakers are focusing too heavily on hypothetical "superintelligence" while overlooking the more immediate danger of deploying unreliable AI in high-stakes settings. They point to an as-yet independently unverified CNN report claiming U.S. officials nearly intercepted a Chinese vessel after an AI-assisted intelligence report incorrectly said it was carrying nuclear-weapons components. From the article: While so many of us were focused on fictional superintelligent machines that we were told could hypothetically cause human extinction, however, there was a more serious story being reported. A series of events almost got us to armageddon, not caused by "rogue, superintelligent AI," but by government reliance on error-prone systems that are marketed by their manufacturers as being close to superintelligent.

A CNN report published on September 18, which hasn't been verified by other major outlets, describes how the US "almost started a war" with China, based on an intelligence report that claimed a Chinese ship was transporting components of nuclear weapons. Military personnel made plans to intercept the Chinese vessel, complete with aircraft and soldiers ready to board the ship. A military skirmish of this kind between China and the US could quickly escalate and spiral into world war three.

It was only moments before executing on the plan that American officials further investigated the intelligence report and found that it had been generated with the use of a chatbot and contained erroneous information about the vessel's contents. Unlike the terminator, "rogue AI," scenario, this incident didn't galvanize lawmakers into announcing calls for regulation so as to avoid potential human extinction. Media outlet after media outlet didn't warn the public that we almost triggered a war against a nuclear superpower because of our military's reliance on error-prone chatbots.

Read more of this story at Slashdot.

Arm en zwart Brazilië trekt richting de radicaal-rechtse Bolsonaro’s. ‘Zelfs al was hij een racist, dan nog zou ik op hem stemmen’

De tijd dat de linkse Lula haast automatisch de stem van arme Brazilianen kreeg, is voorbij. Zij hopen bij de presidentsverkiezingen van zondag op radicale verandering onder de zoon van oud-president Jair Bolsonaro. „Ik hoop dat ze samen gaan regeren en dit land uit de crisis halen.”

Nu ze haar leiderschap heeft gevestigd, moet de anti-woke Kemi Badenoch de Conservatieve Partij weer relevant maken

Zondag begint in Birmingham het jaarlijkse congres van de Britse Conservatieve Partij, de Tories. Partijleider Kemi Badenoch kwam op haar zestiende naar Londen uit Nigeria. Ze ziet zich als rechtser dat de gemiddelde Tory en bestrijdt ideologieën „die mijn zwart-zijn als slachtofferschap zien en wit-zijn als onderdrukking”.

Borsten waar je een toilettas onder kunt klemmen? ‘Ik maak leed lachbaar’

Eerst schreef Maike Meijer de bestseller Wen er maar aan, over een actrice in de overgang. Nu heeft ze de film gemaakt en speelt ze de hoofdrol. Met rimpels, onderkin en vetrol. „Van begin af aan ben ik ervan overtuigd geweest dat ik deze film in z’n volle oprechtheid, onopgesmukt moest spelen.”

Met cruciale verkiezingen op komst overheerst kortebaandemocratie

In Frankrijk zijn de campagnes voor de presidentsverkiezingen van 2027 losgebarsten. Aan grote thema’s geen gebrek, zou je zeggen.

We zijn tijdrapers. We sprokkelen seconden

Als hij duizelig wordt van al het nieuws struint Arjen van Veelen graag langs de Nieuwe Maas. Soms vindt hij iets ouds, „zelfs een roestige spijker of kleipijpje helpt ontsnappen aan het hier en nu.”


Taalverwonderaar Paulien Cornelisse schreef graag over duh, joh, goh, oomph, meh, puh en ugh

Paulien Cornelisse werd in 2009 in één klap de meest gelezen taalschrijver van haar generatie. Haar werk nodigde de lezer uit zich door woorden te laten verrassen. „Gek woord, ‘gek’.”

Wet fallen leaves

lioil has added a photo to the pool:

Wet fallen leaves

Kanzakibana-park, Sasebo, Nagasaki, Japan

Buda. Templo Kotoku - in, Kamakura 🇯🇵

Lucho Maya has added a photo to the pool:

Buda. Templo Kotoku - in, Kamakura 🇯🇵

the dentist I - season: the new generation

conspectus_bs posted a photo:

the dentist I - season: the new generation

Kodak Portra 400 with Mamiya 645 Pro and Sekor 35 mm

Earth from Space: Typhoon Surigae

europeanspaceagency posted a photo:

Earth from Space: Typhoon Surigae

We are used to seeing satellite images of tropical storms from above the clouds, featuring the characteristic white swirls around the eye of the storm. This false-colour, polarised image from Copernicus Sentinel-1 shows us the surface of the sea beneath the clouds, as seen by the satellite’s radar instrument. The sea conditions reflect the strong winds as Typhoon Surigae passes over.

The image, captured on 28 September 2026, shows Typhoon Surigae as it was moving north-eastwards in an area of the Philippine Sea about 200 km south of the island of Shikoku, Japan. By 1 October, the storm, also known as Typhoon no. 26, was almost 1000 km away, roughly 200 km south of Tokyo. It is one of several typhoons in the Pacific Ocean at the moment.

The relatively calm seas at the eye of the storm are clearly visible in dark blue in this image. The colorful effect is created using two radar polarisations, each assigned to a different colour. The orange-yellow ring in the image is where the radar instrument has detected rough ocean conditions and strong winds.

The lighter blue areas of the image show where the radar has detected a different kind of signal and it most likely denotes ocean and wind conditions that differ to the bright yellow and orange areas. Some of the possible causes are lower wind speeds, less sea surface movement or areas of rain.

Some bright yellow flecks are seen in the lower part of the image. While these look like small islands, there are no land masses in that region – they are most likely to be areas of concentrated wind and rain.

When this radar image was acquired, Typhoon Surigae had strong winds with maximum gusts of up to 240 km per hour, with dangerous ocean conditions including strong swells and waves reaching up to 7 m. Since then, it has weakened considerably and is currently classed as a tropical depression, with maximum wind speeds of 55 km per hour.

Credits: contains modified Copernicus Sentinel data (2026), processed by ESA; CC BY-SA 3.0 IGO

404 Media

404 Media is an independent media company founded by technology journalists Jason Koebler, Emanuel Maiberg, Samantha Cole, and Joseph Cox.

Podcast: The FBI Was Hacked. We’ve Seen the Data

Podcast: The FBI Was Hacked. We’ve Seen the Data

We start this week with Joseph’s stories on the massive FBI hack. 404 Media broke this news and continued to cover the breach of data on all FBI employees and their spouses. After the break, Jason tells us how a surveillance company is telling cops it wants to add facial recognition tech to Flock camera data. In the subscribers-only section, Jason and Joseph chat all about Muse, Meta’s new agentic AI, and how humans are actually behind some of the tasks. Because of course.

Listen to the weekly podcast on Apple Podcasts, Spotify, or YouTube. Become a paid subscriber for access to this episode's bonus content and to power our journalism. If you become a paid subscriber, check your inbox for an email from our podcast host Transistor for a link to the subscribers-only version! You can also add that subscribers feed to your podcast app of choice and never miss an episode that way. The email should also contain the subscribers-only unlisted YouTube link for the extended video version too. It will also be in the show notes in your podcast player.


The Register

Biting the hand that feeds IT — Enterprise Technology News and Analysis

OpenAI alerts 100+ orgs that its 'misaligned models' attempted to break in - or worse

OpenAI's agents have repeatedly strayed beyond their intended scope. Two separate reports detail the activity, including one from Sam Altman’s company saying it has notified more than 100 organizations about potentially problematic model activity. OpenAI, in a late Wednesday update to its ongoing Hugging Face investigation, said it has notified more than 100 organizations that “misaligned models” may have accessed their systems. “Notification does not mean that any private information was accessed, or that there was a compromise of any third-party system,” the update said. A separate Thursday report from digital forensic and incident response startup Asymmetric Security said OpenAI’s rogue agents accessed data belonging to 55 organizations. These include the US Department of Education, UN Trade and Development, US Bureau of Economic Analysis, MAX.gov containing federal budget documents, the European Centre for Disease Prevention and Control, the US Securities and Exchange Commission, the International Energy Agency, and the FBI Crime Data Explorer. Asymmetric used only publicly available data to compile this list, and said the activity occurred between March and September. The agents’ probes indicate they were tasked with researching public health and other data, “possibly as part of an evaluation,” according to the report. “We found successful access to staging environments; evidence of the use of attacker reconnaissance tactics; and evidence of probing a broader set of websites, including those of the CDC, SEC, International Energy Agency, and Mayo Clinic,” it said, noting that the investigation also uncovered some “novel tactics” the agents used to break out of their sandboxes and gain full web access. “Some of these tactics left records erased or inaccessible, making it impossible to rule out access to sensitive data based on public information alone,” the authors wrote. The Register asked OpenAI if the organizations on Asymmetric’s list were among those notified by OpenAI. The model maker declined to say which orgs had been notified, but previously confirmed to the New York Times that its agents probed websites for the US Education Department, Commerce Department, and the Securities and Exchange Commission. An OpenAI spokesperson sent us this statement via email: “As we previously announced, we’re reviewing misaligned model activity and notifying organizations when we identify potential impacts to their systems. We’re also investigating findings in third-party reports, comparing them with our own and seeking additional information where needed. Our priority is to provide affected organizations with accurate, useful information, and we’ll keep refining our approach as we learn more. Most of the activity we’ve reviewed involved routine research tasks, including accessing public web content. Some involved government websites, which our models often use as authoritative sources of public information.” The growing number of rogue agent hacking incidents raises questions about AI makers’ safety and security practices during testing - and has increased calls for holding AI executives legally liable for their models’ criminal activities. According to Horizon3 CEO Snehal Antani, who builds and tests agents at his threat-exposure startup, the term “misalignment” lets frontier model makers off the hook too easily. “A ‘misaligned models incident’ is basically a fancy way of saying a model didn't respect scope - or wasn't given one - had no audit logs or observability in place to detect breakout, and accessed third-party systems without authorization,” Antani told The Register. “The responsibility sits with the labs that build and deploy these models,” he added. “The safety-versus-security framing lets them sidestep accountability, and they are not incentivized to prioritize security because moving fast is the priority.” OpenAI’s most recent rogue agent disclosure comes as it - and every other major AI company - drinks from the firehose of near daily security and safety concerns surrounding its models. Last Friday, OpenAI quietly paused training of its most advanced models after admitting an agent used DNS to reach an external chatbot. On Monday, it postponed its planned release of GPT-6.1 Astra after the model showed higher levels of deception than its predecessor, including not always accurately telling users what actions it had or hadn't taken. It also performed unsolicited supply chain attacks in simulated security evaluations, according to the UK Artificial Intelligence Security Institute. On Wednesday, OpenAI accused rival Chinese model maker Moonshot AI of distillation - essentially copying OpenAI models’ reasoning at scale - and said that poses a national security concern. Early Friday, OpenAI confirmed to The Register that it fired two safety researchers and a program manager for allegedly mishandling sensitive company information.®

The Guardian

Latest news, sport, business, comment, analysis and reviews from the Guardian, the world's leading liberal voice

Olivia Dean accused of plagiarism on her I’ve Seen It track

Mattie Music Group, owners of Bill Withers’ back catalogue, contend the Grammy winner infringed on Just the Two of Us

Olivia Dean has been accused of plagiarizing the Bill Withers classic Just the Two of Us.

The owners of Withers’ back catalogue aimed that allegation at his fellow Grammy winner in a copyright infringement lawsuit filed on Thursday in US federal court in Los Angeles.

Continue reading...

Palestine Action activists used whips and hammers to threaten guards at arms factory, court hears

Five defendants accused of being part of ‘black team’ tasked with overcoming security at Israel-linked firm Elbit near Bristol

Palestine Action activists brandished whips, hammers and kebab skewers to intimidate security guards and keep them at bay during a break-in at an Israel-linked arms factory, a court has heard.

Five defendants are accused by prosecutors of being part of a “black team”, wearing black jumpsuits, whose role was to overwhelm security guards, so that a “red team”, wearing red jumpsuits, could break into the Elbit systems factory in Filton, near Bristol, and smash up equipment including drones.

Continue reading...

Drumcree march standoff: protesters and Orange Order both vow to stay ‘as long as it takes’

As members of Orange Lodge No 1 gather and residents occupy Garvaghy Road, each side speaks of grievances that go back decades and centuries

Half a mile of countryside separates Drumcree parish church and Garvaghy Road. You can walk it in 15 minutes, listening to birdsong. The protesters gathered at each end, however, speak of grievances that go back decades and centuries to explain why a dispute once thought settled has returned to torment Northern Ireland.

Up on the hill at Drumcree this week, Paul, a 64-year-old Orangeman who declined to give his surname, said for too long he and his brethren had been denied the right to parade along a traditional route that would honour Protestant forefathers who fell at the Battle of the Boyne in 1690 and the Somme in 1916.

Continue reading...

France v Italy: Nations League football – live

⚽ Nations League updates from the 7.45pm BST kick-off
⚽ Live scores | Nations League tables | Read Football Daily

G’day and welcome to live, minute-by-minute coverage of the Nations League match between France and Italy at the Stade de France in Saint-Denis.

France’s new coach Zinedine Zidane has made a fine start: two away games. two 1-0 wins against Belgium and Turkey. This is his first home game as France manager, and his first meeting with Italy since 9 July 2006. Don’t play silly buggers; you know exactly what happened that night.

Italy 0-2 Belgium

Turkey 0-1 France

Continue reading...

Formula 1 News

Formula 1® - The Official F1® Website

Vasseur responds to gossip about his future

Fred Vasseur says Ferrari had to act to end a week of rumours about his future, as he defended both his team and his relationship with the Scuderia's leadership.

Rotterdam - FediMeteo (@rotterdam@nl.fedimeteo.com)

Weer voor de stad Rotterdam Deze bot wordt beheerd door het FediMeteo-project. Voor informatie en contact kunt u de pagina https://fedimeteo.com raadplegen.

Weer voor Rotterdam ☀️ - 02-10-2026 19:15 CEST...

Weer voor Rotterdam ☀️ - 02-10-2026 19:15 CEST

In één oogopslag:
• 18.7°C · Zonnig ☀️ | Min 14.5°C / Max 20.4°C

Verwachting voor vandaag:
• Min 14.5°C, Max 20.4°C (Bewolkt) ☁️, 🧭 1031.0 hPa ➡️ 0.0 hPa/24h, Windsnelheid: 11.2 km/u (3.1 m/s), richting: ↗ 207°

Uurlijkse voorspelling voor de komende 12 uur:

• 20:00: 18.0°C (Helder) 🌕, 🧭 1031.0 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 6.1 km/u (1.7 m/s), richting: ↑ 200°
• 21:00: 17.6°C (Helder) 🌕, 🧭 1030.9 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 4.0 km/u (1.1 m/s), richting: ↗ 215°
• 22:00: 17.0°C (Bewolkt) ☁️, 🧭 1031.0 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 2.5 km/u (0.7 m/s), richting: ↘ 337°
• 23:00: 16.3°C (Bewolkt) ☁️, 🧭 1031.2 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 5.4 km/u (1.5 m/s), richting: ← 78°
• 00:00: 15.8°C (Licht bewolkt) 🌕, 🧭 1031.0 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 6.8 km/u (1.9 m/s), richting: ← 105°
• 01:00: 15.2°C (Gedeeltelijk bewolkt) ☁️, 🧭 1030.9 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 7.2 km/u (2.0 m/s), richting: ↖ 120°
• 02:00: 15.0°C (Bewolkt) ☁️, 🧭 1030.7 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 7.2 km/u (2.0 m/s), richting: ↖ 126°
• 03:00: 14.7°C (Bewolkt) ☁️, 🧭 1030.3 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 8.3 km/u (2.3 m/s), richting: ↖ 128°
• 04:00: 14.7°C (Gedeeltelijk bewolkt) ☁️, 🧭 1030.1 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 7.6 km/u (2.1 m/s), richting: ↖ 137°
• 05:00: 14.6°C (Bewolkt) ☁️, 🧭 1030.0 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 7.2 km/u (2.0 m/s), richting: ↖ 140°
• 06:00: 14.7°C (Bewolkt) ☁️, 🧭 1029.8 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 8.3 km/u (2.3 m/s), richting: ↖ 145°
• 07:00: 14.5°C (Bewolkt) ☁️, 🧭 1029.8 hPa ➡️ 0.0 hPa/1h, Windsnelheid: 7.6 km/u (2.1 m/s), richting: ↖ 155°

Voorspelling voor de komende dagen:

• zaterdag 03 oktober: Min 14.5°C, Max 20.5°C (Bewolkt) ☁️, 🧭 1030.0 hPa ↘️ -1.0 hPa/24h, Windsnelheid: 8.3 km/u (2.3 m/s), richting: ↑ 191°
• zondag 04 oktober: Min 15.4°C, Max 21.6°C (Bewolkt) ☁️, Kans op neerslag 2%, 🧭 1028.2 hPa ↘️ -1.8 hPa/24h, Windsnelheid: 10.4 km/u (2.9 m/s), richting: ↙ 51°
• maandag 05 oktober: Min 12.6°C, Max 19.0°C (Bewolkt) ☁️, 🧭 1024.5 hPa ↘️ -3.7 hPa/24h, Windsnelheid: 14.6 km/u (4.1 m/s), richting: ↗ 227°
• dinsdag 06 oktober: Min 12.4°C, Max 18.7°C (Bewolkt) ☁️, Kans op neerslag 14%, 🧭 1020.1 hPa ↘️ -4.4 hPa/24h, Windsnelheid: 8.5 km/u (2.4 m/s), richting: ↗ 230°
• woensdag 07 oktober: Min 13.6°C, Max 18.3°C (Lichte motregen) 🌦️, Neerslag 0.4 mm, Kans op neerslag 35%, 🧭 1014.8 hPa ↘️ -5.3 hPa/24h, Windsnelheid: 8.1 km/u (2.2 m/s), richting: ↙ 49°
• donderdag 08 oktober: Min 11.3°C, Max 14.3°C (Matige motregen) 🌦️, Neerslag 8.0 mm, Kans op neerslag 45%, 🧭 1013.6 hPa ↘️ -1.2 hPa/24h, Windsnelheid: 21.0 km/u (5.8 m/s), richting: ↘ 320°

Details:
• 🌡️ Huidige temperatuur (om 19:15): 18.7°C (Zonnig)
• 🤚 Gevoelstemperatuur: 17.1°C (-1.6°C)
• 💨 Windsnelheid: 7.2 km/u (2.0 m/s), richting: ↗ 204°
• 🌬️ Windstoten: 12.6 km/h (3.5 m/s)
• 💧 Luchtvochtigheid: 59%
• 🧭 Luchtdruk: 1031.0 hPa ➡️ 0.0 hPa/3h
• 👁️ Zichtbaarheid: 25.9 km
• ☀️ UV-index: 0.0
• 🌅 Zonsopgang: 07:44 · 🌇 Zonsondergang: 19:17

Luchtkwaliteit:
• AQI: 51 🟡 (Matig)
• PM2.5: 8.8 μg/m³
• PM10: 17.7 μg/m³

Gegevens geleverd door Open-Meteo