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Nearly half of all dementia cases could be delayed or prevented altogether by addressing 14 possible risk factors, including vision loss and high cholesterol. That is the key finding of a new study published in the journal The Lancet.

If AI alignment is the serious issue that OpenAI believes it to be, it is not just a technical problem to be solved by engineers or tech companies, but also a social one. That will require input from philosophers, but also social scientists, lawyers, policymakers, citizen users and others.

Activists are calling for a U.S. arms embargo on Israel, which the Democratic Party’s new national platform does not include. Dov Waxman, a scholar of Israel studies, explains what is behind the U.S.’s relationship with Israel and the strategic reasons why an arms embargo is, at best, a remote possibility.

Differences over politics and policy have a long history of being divisive, of course. But it’s one thing to disagree over substantive matters such as tax rates or foreign aid and something very different to undermine the legitimacy of your opponents. It’s the difference between framing those who disagree with you as fair and equal competitors or as enemies who must be defeated.

Since 5G’s rollout, which coincided with the Covid-19 pandemic, it was accompanied by all manner of conspiracies and falsehoods, notably that it was causing or spreading the pandemic, and that vaccines contained computer chips that would allow us to be controlled from a distance via 5G technology. Don’t believe the fabrications.

Alain Delon’s death at the age of 88 brings down the curtain of one of postwar European cinema’s most important film stars. Known for his striking “movie star” look – chiselled features, piercing blue eyes – and magnetic screen presence, Delon portrayed characters who seemed on the surface to be effortless and suave.

While television and radio political ads have been subject to strict disclosure requirements for decades, their online counterparts exist in a regulatory vacuum. Social media giants like Facebook, X – formerly Twitter – and Instagram have become central battlegrounds for political campaigns. Yet they operate without the transparency mandated for traditional broadcast media. This allows advertisers to use sophisticated microtargeting to tailor messages to voters, often exploiting detailed personal data.

Some Republicans appear to think they can win by making gender an issue in the campaign. This is apparent in the sexist rhetoric that Trump and other Republicans are using when talking about Harris. Trump, who has a history of making sexist statements, asserted that foreign leaders would regard Harris as a “play toy,” referred to her as unintelligent, and is now commenting on her appearance.

The term “assassination” is not defined under international law. Legal scholars rely on standard dictionary definitions where assassination is defined as “murder by sudden or secret attack often for political reasons.” But treaties and other international law do make clear that killing for political reasons by sudden or secret attack is unlawful.