Foto de Jim Reardan obtida no Unsplash

Este artigo é uma tradução pessoal e junção seletiva de um texto e da transcrição de um vídeo sobre celular e toxicidade que pode ser encontrada no site nutritionfacts.org, do médico americano Dr. Michael Greger. Ele contém dezenas de citações de artigos acadêmicos, para ver essas citações visite o texto e o vídeo original em inglês aqui e aqui.

Disclaimer: nem mesmo este artigo sendo de um médico e tendo uma profusão de citações acadêmicas ele pode ser tido como conselho médico por si só.

Os telefones celulares podem causar tumores cerebrais? Sempre que uma indústria de trilhões de dólares…


Foto de Piret Ilver obtida no Unsplash

Disclaimer: esse artigo é apenas um apanhado de experiências e possibilidades, e de forma nenhuma constitui endosso médico.

Meditemos sobre a vida de hoje: informação em profusão para que nunca tenhamos nenhum tipo de perigo advindo da falta de conhecimento, com alimentação farta e barata para que o mínimo possível de pessoas seja afetada pela fome. Hoje seria a melhor época na história para se viver, não?

Talvez de fato seja, na verdade provavelmente é, ao menos que se tenha o azar de estar num dos ainda muitos quinhões de extrema pobreza do mundo ou em uma situação particular bastante…


Photo by Alexandra on Unsplash

Not too long ago, I wrote a very thorough series of articles about Web history and HTML. The second one in this series is about deprecated HTML tags (here’s the first and the third, by the way). On this text, I emphasized that, during the early years of Web, HTML took care of functionality, content and presentation. Later, following conventions borrowed by other fields from computing, we came up with something usually called Separation of Concerns. This means that, when it came to functionality, JavaScript took over, and for the presentation we were offered cascading style sheets, or CSS for…


Photo by Art Lasovsky on Unsplash

This is part of a series about HTML and the early web, specifically a sequel of an article about deprecated and changed tags.

All developers know HTML, even when they’re not dealing with Front-end coding. Many of those developers deal with it very frequently and some of them also know that it was initially a medium for text only (or, rather, hypertext), then for some brief period it was also put in charge of layout and even some functionality (for which it did an awful job, as it was never designed to do it) and then, finally free of those…


Antique typewriter
Antique typewriter
Photo by Sergey Zolkin on Unsplash

This is a sequence to my article about the early days of Web and how Web technology was shaped, now focused on HTML only.

In the previous article mentioned, it is stated that HTML was initially crafted by Tim Berners-Lee as a medium for text (hypertext, for that matter) and little else. The layout powers of Web, in the beginning, were not a concern, as well as no big functionalities were expected from it.

Only when people started using (and abusing) the Web as a commercial media, around circa 1994/95, HTML started being a limiting factor, as it was ideal…


Photo by Andrew Ruiz on Unsplash

A long time ago, during the 1980s, in an institute called CERN (the European institute for nuclear research, in Switzerland), a British contractor called Tim Berners-Lee, together with some colleagues, came up with an idea to establish a connection via computer and land telephone lines between many researchers spread around the world and the institute, in order to do improve the exchange of academic information.

Some scientific articles from CERN’s researchers were already available on a local network written using some form of markup. It allowed for articles with some library-like indexing as well as basic formatting like headers, basic…


To our earliest civilisations, to have a calendar was a matter of survival. To know when crops could be harvested and when winter was going to come was of obvious importance in an agricultural society. With that vital requirement in mind, religions also took the calendar to margin their rituals and demands. …


The year was 1808. Napoleon was just about to invade Portugal, allied to his enemies United Kingdom, to establish control over the Iberian peninsula. The Regent Prince John, that took the decision-making role nine years before, after the queen Mary I be deemed incapable of doing so, decided to flee together with the Braganza court with a number that is said today to be as high as 1,500 people, but many historians used to say a number roughly ten times high.

They fled to Brazil, one of Portugal’s colonies at the time, the biggest and most developed one, but still…


Como manchar a reputação da eficiência alemã

Artigo escrito como um resumo de quatro episódios especiais do programa de rádio do programa da rádio RBB chamado Radio Spätkauf, com alguns detalhes extras de fontes locais e da Wikipedia.

Quando passageiros voam de ou para Berlim, na Alemanha, geralmente por companhias locais ou de baixo custo como a RyanAir ou EasyJet, toma-se o rumo do aeroporto de Schönefeld, neste que é o antigo aeroporto que servia à parte oriental de Berlim nos tempos do muro. …


Several years ago, I was at the Edward Tufte website’s forum, discussing the design of everyday things, as I came across the traffic lights subject. Today’s traffic lights system is not bad overall, and bearing in mind how similar the system is in different corners of the world we get to know it is a huge success.

William Warby from London, England — Traffic Light Tree

After many years from that post (in which I gave my own suggestion) and thinking about the subject again, I will make a humble attempt here to go further. So, how can we improve our traffic lights? They’re already good, I can say…

Marcos Sandrini

Designer and front-end programmer with 20+ years of experience, also a keen observer of the world and its people

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