内容摘要："They were like, 'Get out of here!'. And it wasn't until I was on the plane, and we had already left, and the seat belt sign was switched off, that I reached into my jacket to check."

"They were like, 'Get out of here!'. And it wasn't until I was on the plane, and we had already left, and the seat belt sign was switched off, that I reached into my jacket to check."

to keep up with the latest climate and environment stories with the BBC's Justin Rowlatt. Outside the UK?"Harvard's got to behave themselves," he told reporters gathered in the Oval Office. "Harvard is treating our country with great disrespect, and all they're doing is getting in deeper and deeper and deeper."

When combined with other administration attempts – freezing more than $3bn in research grants and suspending foreign students from enrolling in Harvard – Trump's directives represent a frontal attack on one of America's most prestigious, and wealthy, institutions of higher education.Even if court challenges overrule some of these actions – some have already been put on hold – the impact is being felt across the landscape of American higher education."They're doing multiple things every single day, some of those things are sneaking through," says Greg Wolfson, president of the American Association of University Professors. "But more importantly, they're changing the culture. They're changing people."

At Harvard's commencement ceremonies on Thursday, students said there was a "palpable concern" on campus."People sort of knew Trump was trying some of these moves but [they were] shocked when it happens," admits one graduate, a British national who requested anonymity because he was concerned public comments could threaten his US work visa. "It feels like the nuclear option."

"If this can happen to Harvard it can happen to any university in the country," he adds.

But the repercussions of this apparent Harvard-Trump fight run far deeper than the management of a single Ivy League university. Could the measures Trump is taking mark, as some suggest, the latest, albeit most ambitious, step by conservatives to erode some of the traditional pillars of support for the Democratic Party?Its AI Overviews feature, unveiled by Google at its developers conference last year, offers AI-generated summaries that currently appear at the top of search results.

from users who posted some of the odd responses they received, as when it advised one user that non-toxic glue could help make cheese stick to pizza.Another widely circulated response stated that geologists recommend humans eat one rock each day.

A Google spokesperson said at the time that these were "isolated examples."Mr Pichai said on Tuesday that AI Overviews now gets 1.5 billion uses per month in more than 200 countries and territories.