↩ Accueil

Vue normale

Reçu aujourd’hui — 2 décembre 2025

Shells found in Spain could be among oldest known musical instruments

2 décembre 2025 à 06:00

Conch-shell trumpets discovered in Neolithic settlements and mines in Catalonia make tone similar to french horn, says lead researcher

As a child, Miquel López García was fascinated by the conch shell, kept in the bathroom, that his father’s family in the southern Spanish region of Almería had blown to warn their fellow villagers of rising rivers and approaching flood waters.

The hours he spent getting that “characteristically potent sound out of it” paid off last year when the archaeologist, musicologist and professional trumpet player pressed his lips to eight conch-shell trumpets. Their tones, he says, could carry insights into the lives of the people who lived in north-east Spain 6,000 years ago.

Continue reading...

© Photograph: University of Barcelona

© Photograph: University of Barcelona

© Photograph: University of Barcelona

Is AI making us stupid? – podcast

Artificial intelligence can execute tasks in seconds that once took humans hours, if not days to complete. While this may be great for productivity, some researchers are concerned that our increasing use of AI could be impacting our ability to tackle difficult problems and think critically. To find out where the science stands, and how worried we should be about the potential of AI to change how we think, Ian Sample hears from Madeleine Finlay and Sam Gilbert, professor of neuroscience at University College London

Are we living in a golden age of stupidity?

Support the Guardian

Continue reading...

© Photograph: Caia Image/Alamy

© Photograph: Caia Image/Alamy

© Photograph: Caia Image/Alamy

Shortage of ‘breakthrough’ weight loss drugs will slow fight against obesity, WHO warns

1 décembre 2025 à 14:45

WHO urges countries to make drugs such as Mounjaro more accessible to people and asks drugs companies to lower prices

Weight loss drugs such as Mounjaro offer huge potential to tackle soaring obesity globally but are currently only available to one in 10 of those who need them, the World Health Organization has said.

Their proven effectiveness in helping people lose weight means the medications represent “a new chapter” in how health services can treat obesity and the killer diseases it causes, the WHO added.

Continue reading...

© Photograph: Jon Challicom/Getty Images

© Photograph: Jon Challicom/Getty Images

© Photograph: Jon Challicom/Getty Images

Reçu hier — 1 décembre 2025

Le jus d’orange pourrait exercer des effets méconnus et profonds sur votre organisme

1 décembre 2025 à 18:00

Bien plus qu’un simple compagnon du petit-déjeuner, le jus d’orange pourrait influencer des mécanismes biologiques essentiels. Une nouvelle étude révèle que cette boisson courante agit directement sur l’expression de milliers de gènes liés à l’immunité, à l’inflammation et à la régulation cardiovasculaire, suggérant un impact largement sous-estimé sur la santé métabolique et le cœur. Une ... Lire plus

L'article Le jus d’orange pourrait exercer des effets méconnus et profonds sur votre organisme est apparu en premier sur Fredzone.

Le jus d’orange pourrait exercer des effets méconnus et profonds sur votre organisme

1 décembre 2025 à 18:00

Bien plus qu’un simple compagnon du petit-déjeuner, le jus d’orange pourrait influencer des mécanismes biologiques essentiels. Une nouvelle étude révèle que cette boisson courante agit directement sur l’expression de milliers de gènes liés à l’immunité, à l’inflammation et à la régulation cardiovasculaire, suggérant un impact largement sous-estimé sur la santé métabolique et le cœur. Une ... Lire plus

L'article Le jus d’orange pourrait exercer des effets méconnus et profonds sur votre organisme est apparu en premier sur Fredzone.

Parler plusieurs langues pourrait aider le cerveau à vieillir plus lentement

1 décembre 2025 à 17:00

L’allongement de l’espérance de vie apporte autant d’opportunités que de défis. Parmi eux, le vieillissement cognitif demeure l’un des plus préoccupants : difficultés de concentration, mémoire moins fiable, lenteur dans certaines tâches quotidiennes… Pourtant, un comportement du quotidien pourrait offrir une protection simple et durable : la pratique de plusieurs langues. Depuis plusieurs années, les ... Lire plus

L'article Parler plusieurs langues pourrait aider le cerveau à vieillir plus lentement est apparu en premier sur Fredzone.

Parler plusieurs langues pourrait aider le cerveau à vieillir plus lentement

1 décembre 2025 à 17:00

L’allongement de l’espérance de vie apporte autant d’opportunités que de défis. Parmi eux, le vieillissement cognitif demeure l’un des plus préoccupants : difficultés de concentration, mémoire moins fiable, lenteur dans certaines tâches quotidiennes… Pourtant, un comportement du quotidien pourrait offrir une protection simple et durable : la pratique de plusieurs langues. Depuis plusieurs années, les ... Lire plus

L'article Parler plusieurs langues pourrait aider le cerveau à vieillir plus lentement est apparu en premier sur Fredzone.

Un génome colossal dévoile les racines anciennes des pieuvres

1 décembre 2025 à 16:00

Une avancée majeure dans l’étude des céphalopodes vient d’éclairer l’histoire profonde d’un animal rare et souvent mystérieux : le Vampyroteuthis infernalis. Derrière son apparence singulière, ce « vampire des abysses » conserve une signature génétique qui pourrait aider à comprendre l’origine des pieuvres et des calmars. Les chercheurs ont décodé son génome, un ensemble gigantesque ... Lire plus

L'article Un génome colossal dévoile les racines anciennes des pieuvres est apparu en premier sur Fredzone.

Un génome colossal dévoile les racines anciennes des pieuvres

1 décembre 2025 à 16:00

Une avancée majeure dans l’étude des céphalopodes vient d’éclairer l’histoire profonde d’un animal rare et souvent mystérieux : le Vampyroteuthis infernalis. Derrière son apparence singulière, ce « vampire des abysses » conserve une signature génétique qui pourrait aider à comprendre l’origine des pieuvres et des calmars. Les chercheurs ont décodé son génome, un ensemble gigantesque ... Lire plus

L'article Un génome colossal dévoile les racines anciennes des pieuvres est apparu en premier sur Fredzone.

Hole in Antarctic ozone layer shrinks to smallest since 2019, scientists say

1 décembre 2025 à 16:53

EU’s Copernicus monitoring service hails ‘reassuring sign’ of progress observed this year in hole’s size and duration

The hole in the ozone layer over the Antarctic this year was the smallest and shortest-lived since 2019, according to European space scientists, who described the finding as a “reassuring sign” of the layer’s recovery.

The yearly gap in what scientists have called “planetary sunscreen” reached a maximum area of 21m sq km (8.1m sq miles) over the southern hemisphere in September – well below the maximum of 26m sq km reached in 2023 – and shrank in size until coming to an early close on Monday, data from the Copernicus Atmosphere Monitoring Service (Cams) shows.

Continue reading...

© Photograph: Michael Shortt/AP

© Photograph: Michael Shortt/AP

© Photograph: Michael Shortt/AP

When is good enough ‘good enough’?

1 décembre 2025 à 12:00

Whether you’re running a business project, carrying out scientific research, or doing a spot of DIY around the house, knowing when something is “good enough” can be a tough question to answer. To me, “good enough” means something that is fit for purpose. It’s about striking a balance between the effort required to achieve perfection and the cost of not moving forward. It’s an essential mindset when perfection is either not needed or – as is often the case – not attainable.

When striving for good enough, the important thing to focus on is that your outcome should meet expectations, but not massively exceed them. Sounds simple, but how often have we heard people say things like they’re “polishing coal”, striving for “gold plated” or “trying to make a silk purse out of a sow’s ear”. It basically means they haven’t understood, defined or even accepted the requirements of the end goal.

Trouble is, as we go through school, college and university, we’re brought up to believe that we should strive for the best in whatever we study. Those with the highest grades, we’re told, will probably get the best opportunities and career openings. Unfortunately, this approach means we think we need to aim for perfection in everything in life, which is not always a good thing.

How to be good enough

So why is aiming for “good enough” a good thing to do? First, there’s the notion of “diminishing returns”. It takes a disproportionate amount of effort to achieve the final, small improvements that most people won’t even notice. Put simply, time can be wasted on unnecessary refinements, as embodied by the 80/20 rule (see box).

The 80/20 rule: the guiding principle of “good enough”

Also known as the Pareto principle – in honour of the Italian economist Vilfredo Pareto who first came up with the idea – the 80/20 rule states that for many outcomes, 80% of consequences or results come from 20% of the causes or effort. The principle helps to identify where to prioritize activities to boost productivity and get better results. It is a guideline, and the ratios can vary, but it can be applied to many things in both our professional and personal lives.

Examples from the world of business include the following:

Business sales: 80% of a company’s revenue might come from 20% of its customers.

Company productivity: 80% of your results may come from 20% of your daily tasks.

Software development: 80% of bugs could be caused by 20% of the code.

Quality control: 20% of defects may cause 80% of customer complaints.

Good enough also helps us to focus efforts. When a consumer or customer doesn’t know exactly what they want, or a product development route is uncertain, it can be better to deliver things in small chunks. Providing something basic but usable can be used to solicit feedback to help clarify requirements or make improvements or additions that can be incorporated into the next chunk. This is broadly along the lines of a “minimum viable product”.

Not seeking perfection reminds us too that solutions to problems are often uncertain. If it’s not clear how, or even if, something might work, a proof of concept (PoC) can instead be a good way to try something out. Progress can be made by solving a specific technical challenge, whether via a basic experiment, demonstration or short piece of research. A PoC should help avoid committing significant time and resource to something that will never work.

Aiming for “good enough” naturally leads us to the notion of “continuous improvement”. It’s a personal favourite of mine because it allows for things to be improved incrementally as we learn or get feedback, rather than producing something in one go and then forgetting about it. It helps keep things current and relevant and encourages a culture of constantly looking for a better way to do things.

Finally, when searching for good enough, don’t forget the idea of ballpark estimates. Making approximations sounds too simple to be effective, but sometimes a rough estimate is really all you need. If an approximate guess can inform and guide your next steps or determine whether further action will be necessary then go for it. 

The benefits of good enough

Being good enough doesn’t just lead to practical outcomes, it can benefit our personal well-being too. Our time, after all, is a precious commodity and we can’t magically increase this resource. The pursuit of perfection can lead to stagnation, and ultimately burnout, whereas achieving good enough allows us to move on in a timely fashion.

A good-enough approach will even make you less stressed. By getting things done sooner and achieving more, you’ll feel freer and happier about your work even if it means accepting imperfection. Mistakes and errors are inevitable in life, so don’t be afraid to make them; use them as learning opportunities, rather than seeing them as something bad. Remember – the person who never made a mistake never got out of bed.

Recognizing that you’ve done the best you can for now is also crucial for starting new projects and making progress. By accepting good enough you can build momentum, get more things done, and consistently take actions toward achieving your goals.

Finally, good enough is also about shared ownership. By inviting someone else to look at what you’ve done, you can significantly speed up the process. In my own career I’ve often found myself agonising over some obscure detail or feeling something is missing, only to have my quandary solved almost instantly simply by getting someone else involved – making me wish I’d asked them sooner.

Caveats and conclusions

Good enough comes with some caveats. Regulatory or legislative requirements means there will always be projects that have to reach a minimum standard, which will be your top priority. The precise nature of good enough will also depend on whether you’re making stuff (be it cars or computers) or dealing with intangible commodities such as software or services.

So what’s the conclusion? Well, in the interests of my own time, I’ve decided to apply the 80/20 rule and leave it to you to draw your own conclusion. As far as I’m concerned, I think this article has been good enough, but I’m sure you’ll let me know if it hasn’t. Consider it as a minimally viable product that I can update in a future column.

The post When is good enough ‘good enough’? appeared first on Physics World.

Mission ExoMars : la Nasa confirme le lancement du rover Rosalind Franklin en 2028

1 décembre 2025 à 09:50

Après plusieurs années d’incertitudes, le rover européen Rosalind Franklin reprend officiellement le chemin de Mars. L’Agence spatiale européenne (ESA) a confirmé que la Nasa assurera le lancement de cette mission emblématique en 2028, offrant ainsi au programme ExoMars une seconde vie après la rupture du partenariat avec la …

Lire la suite

Aimez KultureGeek sur Facebook, et suivez-nous sur Twitter

N'oubliez pas de télécharger notre Application gratuite iAddict pour iPhone et iPad (lien App Store)


L’article Mission ExoMars : la Nasa confirme le lancement du rover Rosalind Franklin en 2028 est apparu en premier sur KultureGeek.

Les cas de vomissements sévères liés au cannabis augmentent aux États-Unis…

30 novembre 2025 à 19:13

Bien que le cannabis présente des bénéfices récréatifs et thérapeutiques reconnus, chaque substance psychoactive comporte des risques potentiels. Une étude récente de l’Université de l’Illinois à Chicago révèle une augmentation préoccupante des visites aux urgences pour syndrome d’hyperémèse cannabinoïde (SHC), affection caractérisée par des épisodes violents et douloureux de vomissements. Les chercheurs ont analysé les ... Lire plus

L'article Les cas de vomissements sévères liés au cannabis augmentent aux États-Unis… est apparu en premier sur Fredzone.

Les cas de vomissements sévères liés au cannabis augmentent aux États-Unis…

30 novembre 2025 à 19:13

Bien que le cannabis présente des bénéfices récréatifs et thérapeutiques reconnus, chaque substance psychoactive comporte des risques potentiels. Une étude récente de l’Université de l’Illinois à Chicago révèle une augmentation préoccupante des visites aux urgences pour syndrome d’hyperémèse cannabinoïde (SHC), affection caractérisée par des épisodes violents et douloureux de vomissements. Les chercheurs ont analysé les ... Lire plus

L'article Les cas de vomissements sévères liés au cannabis augmentent aux États-Unis… est apparu en premier sur Fredzone.
Reçu avant avant-hier
❌