These tags add menus, toggles, media, forms, and responsive images with minimal code.

Naturally occurring radioactive elements are substances whose atomic nuclei are unstable. To become stable, these nuclei spontaneously break down, or decay, by releasing energy in the form of ...

Seventeen elements of the periodic table have taken on outsize importance because of their use in smartphones, electric vehicles, medical devices, and other technologies. They’re valued for their ...

Modern forms of coding make most websites feel like commercial transactions. The HTML Energy movement aims to bring back the joys of the early days. Websites weren’t always slick digital experiences.

Since the invention of the periodic table 150 years ago this month, scientists have worked to fill in the rows of elements and make sense of their properties. But researchers have also pursued a ...

Number 99 on the periodic table does not occur naturally and is difficult to make and store, challenging researchers who want to study it. By Kenneth Chang Einsteinium is an element with a famous name ...

This text-based tutorial is intended for people who learn fast through a combination of reading and images — it’s possible to learn HTML and CSS foundations in 15 minutes through this tutorial. For a ...

Federal health workers are expressing fear and alarm after a website called “DEI Watch List” published the photos, names and public information of a number of workers across health agencies, ...

What are Endangered & Critical Elements? Of the 118 elements that make up everything—from the compounds in a chemist’s arsenal to consumer products on the shelf—44 will face supply limitations in the ...

The Fen Carbonatite Complex may be Europe's key to a secure rare-earth-element supply chain following the discovery of a huge deposit at the site. When you purchase through links on our site, we may ...

Nihonium, moscovium, tennessine, and oganesson are the permanent names for elements 113, 115, 117, and 118, the International Union of Pure & Applied Chemistry (IUPAC) announced today. IUPAC ...

Beijing has suspended exports of certain rare earth minerals and magnets that are crucial for the world’s car, semiconductor and aerospace industries. By Keith Bradsher Keith Bradsher, who has covered ...