Microsoft, Amazon and Google say they still aim to achieve net zero output despite construction boom

Microsoft, Amazon and Google’s collective carbon emissions have increased by nearly a fifth in the past year, driven largely by datacentre construction.

In the financial year ending March 2026, the three tech companies emitted 119m mTCO₂e (metric tonnes of carbon dioxide equivalent), or about a third of those of France.

Government announces plans to invest billions, but questions linger over how its proposals on chips, social media and more will work

Ownership of the commanding heights of the AI economy is a political talking point around the world, as countries seek to assert some control of a technology dominated by the US and China.

London Tech Week, the showcase event for the UK tech industry, focused heavily on that theme this week. A government keen to show it has a growth story, and an assertive narrative on AI, made a number of announcements related to companies, skills and infrastructure. Some represented new commitments and ideas; others appeared to be putting a polish on already announced measures.

Criminal groups and state-linked actors appear to be using commercial models to refine and scale up attacks

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In just three months, AI-powered hacking has gone from a nascent problem to an industrial-scale threat, according to a report from Google.

The findings from Google’s threat intelligence group add to an intensifying, global discussion about how the newest AI models are extremely adept at coding – and becoming extremely powerful tools for exploiting vulnerabilities in a broad array of software systems.

The poster child of the AI boom, valued at $850bn, needs to show strategic discipline after ‘casting its net too wide’

If OpenAI is going to float this year, it has to get serious about its business model. The wow factor around the US company – the poster child of an AI industry boom that has stoked fears of a stock market bubble – has been long established, but when will the profits come? The party can’t go on for ever.

The developer of ChatGPT is one of the biggest startups in the world and is now valued at $850bn (£645bn). Meanwhile, it is reportedly spending $600bn on infrastructure (the amount it invests in datacentres and chips to power its AI models) by 2030. At least this is a reduction on an initial estimate of $1.4tn.

Shares in Uber, Mastercard and American Express fall on back of apocalypse scenario posted on Substack

US stock markets have been hit by a further wave of AI jitters, this time from yet another viral – and completely speculative – warning about the impact of the technology on the world’s largest economy.

The latest foreboding is from Citrini Research, a little-known US firm that provides insights on “transformative ‘megatrends’”. Its post on Substack, which it called a “scenario, not a prediction”, rattled investors by portraying a near future in which autonomous AI systems – or agents – upend the entire US economy, from jobs to markets and mortgages.

Apparent collapse of Nvidia–OpenAI tie-up raises questions about circular funding and who will bear the cost of AI’s expansion

Did the circular AI economy just wobble? Last week it was reported that a much-discussed $100bn deal – announced last September – between Nvidia and OpenAI might not be happening at all.

This was a circular arrangement through which the chipmaker would supply the ChatGPT developer with huge sums of money that would largely go towards the purchase of its own chips.

OpenAI, Anthropic, SpaceX and Stripe are rumoured to be among ten of the biggest companies considering IPOs

You’ve probably heard of “unicorns” – technology startups valued at more than $1bn – but 2026 is shaping up to be the year of the “hectocorn”, with several US and European companies potentially floating on stock markets at valuations over $100bn (£75bn).

OpenAI, Anthropic, SpaceX and Stripe are among the big names said to be considering an initial public offering (IPO) this year.

The chipmaker’s sprawling partnerships are driving extraordinary growth but also bank its future on the AI boom paying off quickly

Nvidia is, in crucial ways, nothing like Enron – the Houston energy giant that imploded through multibillion-dollar accounting fraud in 2001. Nor is it similar to companies such as Lucent or Worldcom that folded during the dotcom bubble.

But the fact that it needs to reiterate this to its investors is less than ideal.