E.P.A. Administrator Michael S. Regan

Pete Kiehart for The New York Times

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What significant change did the Biden administration announce yesterday to dramatically reduce car pollution by 2032?

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Which social media platform, known for its user-generated forums, is going public today at $34 per share, with a valuation starting at $5.4 billion?

Reddit, a popular social media platform known for its vast array of discussion forums, has seen strong investor interest. The IPO is reported to be four to five times oversubscribed. Reddit's IPO is expected to reach its targeted price range of $31 to $34 per share.

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What is SpaceX undertaking for the National Reconnaissance Office under a $1.8 billion contract?

Elon Musk's SpaceX is developing a network of spy satellites for the National Reconnaissance Office, a division of the Department of Defense. These satellites, operating in low orbits, will have Earth-imaging capabilities and will function as a swarm, enabling the US government and military to identify potential targets across the globe swiftly.

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Leo Varadkar, the Prime Minister of Ireland, has unexpectedly announced his resignation due to "mainly political reasons." Which of the following is true about his tenure?

Leo Varadkar, who became Prime Minister in 2017, made history as Ireland's first openly gay leader. Born in Dublin, his father is from India and mother from Ireland. His tenure, however, was marked by political challenges, including unsuccessful referenda to change "sexist" language in the constitution and criticism over treatment of asylum-seekers.

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Which tech giant is Apple potentially partnering with to integrate a generative AI model, Gemini, into its upcoming iPhone?

Apple is considering a partnership with Google to leverage its Gemini generative artificial intelligence model for its next iPhone. This comes as Apple's own efforts to develop a large language model have been lagging. Google already pays Apple over $18 billion annually to be the default search engine on the iPhone's Safari browser.