Science Ask Us Anything The most eco-friendly burial option isn't cremation or human composting With more options than ever, we break down which one's best for the planet. Cemeteries are increasingly running out of space. Are there greener options we ought to turn to? Breakthroughs, discoveries, and DIY tips sent six days a week. Perhaps one of life's hardest tasks is deciding what to do with a loved one's--or even your own--bodily remains. Do you go the cremation route? If you want your last act on Earth to also be good for the Earth, what do you do?

Tech's politics push at home and abroad We report from California's Silicon Valley, where billionaires pour money into midterms, and the AI Impact summit, where India pushes back on'AI monopoly' held by US and China This week, we're examining the tech industry's push for influence in two places separated by a time difference of 13 hours and 30 minutes. The first is where tech sees its next big market, the second its home turf. My colleague Robert Booth reports from last week's India AI Impact summit, where tech companies pledged to spend tens of billions in the coming year to build customer bases and datacenters in the subcontinent. Dara Kerr and Lauren Gambino reported from Silicon Valley, where billionaires are marshalling their wealth to influence California's politics at greater levels than they ever have before. Visitors explore the Google pavilion during the AI Impact summit at Bharat Mandapam in New Delhi, India, on 20 February.

From left: India's prime minister, Narendra Modi, with the chief executives of OpenAI, Sam Altman, and Anthropic, Dario Amodei, at the AI Impact summit in Delhi. From left: India's prime minister, Narendra Modi, with the chief executives of OpenAI, Sam Altman, and Anthropic, Dario Amodei, at the AI Impact summit in Delhi. AI hit: India hungry to harness US tech giants' technology at Delhi summit Narendra Modi's thirst to supercharge economic growth is matched by US desire to inject AI into world's biggest democracy I ndia celebrates 80 years of independence from the UK in August 2027. At about that same moment, "early versions of true super intelligence" could emerge, Sam Altman, the co-founder of OpenAI, said this week. It's a looming coincidence that raised a charged question at the AI Impact summit in Delhi, hosted by India's prime minister, Narendra Modi: can India avoid returning to the status of a vassal state when it imports AI to raise the prospects of its 1.4 billion people? Modi's hunger to harness AI's capability is great.

Tech platforms would have to remove intimate images which have been shared without consent within 48 hours, under a proposed UK law. The government said tackling intimate image abuse should be treated with the same severity as child sexual abuse material (CSAM) and terrorist content. Failure to abide by the rules could result in companies being fined up to 10% of their global sales or have their services blocked in the UK. Janaya Walker, interim director of the End Violence Against Women Coalition, said the welcome and powerful move... rightly places the responsibility on tech companies to act. The proposals are being made through an amendment to the Crime and Policing Bill, which is making its way through the House of Lords.

Reddit's human content wins amid the AI flood For Ines Tan there's one particular site she turns to again and again for advice - and that's Reddit. Tan, who works in communications, regularly jumps on the site for skincare advice, to view reactions to shows she watches, such as The Traitors, and for help planning her upcoming wedding in May. It's a very empathetic place, she says of Reddit. For my wedding, I've found help emotionally, logistically and inspiration-wise. Tan believes people are consulting the online discussion platform more as they're craving human interaction in the world of increasing AI slop.

Fact-checking is extensively studied in the context of misinformation and disinformation, addressing objective inaccuracies. However, a softer form of misinformation involves responses that are factually correct but lack certain features such as clarity and relevance. This challenge is prevalent in formal Question-Answer (QA) settings such as press conferences in finance, politics, sports, and other domains, where subjective answers can obscure transparency. Despite this, there is a lack of manually annotated datasets for subjective features across multiple dimensions. To address this gap, we introduce SubjECTive-QA, a human annotated dataset on Earnings Call Transcripts' (ECTs) QA sessions as the answers given by company representatives are often open to subjective interpretations and scrutiny. The dataset includes 49, 446 annotations for long-form QA pairs across six features: Assertive, Cautious, Optimistic, Specific, Clear, and Relevant . These features are carefully selected to encompass the key attributes that reflect the tone of the answers provided during QA sessions across different domains. Our findings are that the best-performing Pre-trained Language Model (PLM), RoBERTa-base, has similar weighted F1 scores to Llama-3-70b-Chat on features with lower subjectivity, such as Relevant and Clear, with a mean difference of 2 .

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