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Reçu hier — 3 juillet 2025

Extreme heatwaves may cause global decline in dairy production, scientists warn

3 juillet 2025 à 20:00

Israel-based study finds that by 2050 average daily milk production could be reduced by 4% as a result of worsening heat stress

Dairy production will be threatened by the increasing frequency and intensity of heatwaves, a study has found.

Drawing on records from more than 130,000 cows over a period of 12 years, the researchers report that extreme heat reduces dairy cows’ ability to produce milk by 10%.

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© Photograph: Bill Holden/Getty Images/Image Source

© Photograph: Bill Holden/Getty Images/Image Source

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It’s true that my fellow students are embracing AI – but this is what the critics aren’t seeing | Elsie McDowell

29 juin 2025 à 09:00

Those turning to ChatGPT aren’t lazy. My generation has been stranded in a rapidly changing and, since Covid, badly mishandled education system

Reading about the role of artificial intelligence in higher education, the landscape looks bleak. Students are cheating en masse in our assessments or open-book, online exams using AI tools, all the while making ourselves stupider. The next generation of graduates, apparently, are going to complete their degrees without ever having so much as approached a critical thought.

Given that my course is examined entirely through closed-book exams, and I worry about the vast amounts of water and energy needed to power AI datacentres, I generally avoid using ChatGPT. But in my experience, students see it as a broadly acceptable tool in the learning process. Although debates about AI tend to focus on “cheating”, it is increasingly being used to assist with research, or to help structure essays.

Elsie McDowell is a student. She was the 2023 winner of the Hugo Young award, 16-18 age category

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

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© Photograph: Sergio Azenha/Alamy

© Photograph: Sergio Azenha/Alamy

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