ICYMI: the week's biggest tech news stories from Tim Cook stepping down to our Earth Day celebrations

Here's your firmware update for April 25, 2026

News By Hamish Hector Contributions from Lance Ulanoff, Mark Wilson, Josephine Watson published 25 April 2026

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This week, we celebrated Earth Day with our annual Sustainability Week coverage. We covered sustainable phone battery designs, exciting EV developments, and plenty more.

We also saw the biggest Apple news in years: Tim Cook is stepping down as CEO.

To catch up on all this and more, scroll down for our picks for the week's seven biggest tech news stories, starting with our attempt to build a PC with AI...

Article continues below

7. We built a PC using AI

I let ChatGPT instruct my first ever PC build - will it run? - YouTube

Watch On

Building a PC can be a daunting task. You have to find parts that can achieve your gaming needs, put them all together, and somehow stick to a budget in the middle of a RAM and component cost crisis.

So this week, we built a PC planned by AI to see if it could help some complete PC-building newbies put together a great rig — with ChatGPT and Gemini offering part-buying advice as well as building instructions to assemble our dream PC.

Spoiler alert: our computing editor Matt Hanson had to lend a hand with some real expertise.

• Read the full-story: I followed ChatGPT's PC-building instructions, and all I got was a huge headache

6. We hosted Sustainability week 2026

It's a hard ask to make the tech industry more sustainable; from hardware manufacturing to energy usage and e-waste, there's a mountain of challenges to overcome. That's why, just in time for Earth Day 2026, it's TechRadar Sustainability Week once again!

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