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Blockchain transactions are carried in blocks. The amount of energy it takes to add a new block varies widely depending on how it’s done. Yuichiro Chino/Moment via Getty Images

What is proof-of-stake? A computer scientist explains a new way to make cryptocurrencies, NFTs and metaverse transactions

Ethereum, one of the world’s largest blockchains and host of decentralized finance, NFTs and billions of dollars’ worth of cryptocurrency, is poised to dramatically reduce its energy consumption.
Peiter “Mudge” Zatko was Twitter’s security chief. What he claims he found there is a security nightmare. Photo by Matt McClain/The Washington Post via Getty Images

Did Twitter ignore basic security measures? A cybersecurity expert explains a whistleblower’s claims

Former Twitter security chief alleges in a whistleblower complaint gross security malpractice, with many employees having access to the social media platform’s code as well as user data.
The U.S. could soon catch up to the European Union in protecting people’s data privacy. Teera Konakan/Moment via Getty Images

A new US data privacy bill aims to give you more control over information collected about you – and make businesses change how they handle data

Data collection is big business in the US, but a bipartisan data privacy bill rapidly moving through Congress promises to affect the information websites, social media platforms and all other businesses collect.
As far back as the late ‘80s people could venture into a virtual online world. Screenshot of Habitat from Lucasfilm Games

The metaverse isn’t here yet, but it already has a long history

The metaverse is still unfolding, but it has been developing for more than a century. Rudimentary virtual worlds have existed – in imagination and reality – since the days of the telegraph.
Which lesson should the technology field take from architecture: modernist efficiency or ‘living structure’? Jamie Street/Unsplash; Peter Morville/Flickr

How ‘living architecture’ could help the world avoid a soul-deadening digital future

The late Christopher Alexander’s groundbreaking work on patterns has informed the development of technology for decades, but it’s the architect’s later work that holds the key to a healthier digital life.
Agriculture is becoming increasingly dependent on technology. U.S. Department of Agriculture Photo by Lance Cheung

Rise of precision agriculture exposes food system to new threats

Bringing advanced technologies to the ancient practice of farming could help feed the world’s growing population, but it could also open the door for people looking to disrupt the global food system.

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