OpenAI's mathematical breakthroughs roil the field
Experts have argued that AI could be revolutionary for mathematics, but only if it gives the proof for a solution.
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400 stories
Oil prices elevated as Mideast tensions amplify supply concerns
Analysts said attacks on vessels in the Strait of Hormuz were increasing, while Iran-backed Houthis remain a threat in the Bab el-Mandeb waterway.
Semafor Tech1 min readAfrica’s first credit rating agency set to launch
African Union’s new rating agency promises to add a fresh voice in a market dominated by the Big Three credit rating agencies.
Semafor Tech4 min readThe worry hanging over private credit: Can anyone trust the numbers?
Investors allege Wall Street’s biggest names inflated their marks.
Semafor Tech3 min readTrump haters are more confident in election integrity, poll finds
Sixty-three percent of Democrats say they have confidence in election integrity, according to Gallup polling.
Semafor Tech1 min readTrump Account changes could take heat next year
The Treasury Department moved last week to automatically enroll tens of millions of children and greenlight donations of individual stocks.
Semafor Tech1 min readNo Gaza peace three years after Oct. 7
President Trump’s Board of Peace unveiled a $2.45 billion Gaza recovery plan at a recent meeting, but the goals remain out of reach.
Semafor Tech1 min readDemocrat rolls out AI liability proposal
Massachusetts Rep. Lori Trahan’s “CLAIM Act” would make it easier for third parties to sue AI developers.
Semafor Tech1 min readAI safety group lays out demands for candidates
Guardrails Action warns politicians in a new letter that they’ll face ‘active, mobilized opposition’ if they don’t commit to safety regulations.
Semafor Tech2 min readNobel Prize in Physics awarded to ‘ghost particle’ scientist
Belgian-American scientist Francis Halzen was honored for his pioneering work studying “ghost particles” in the Antarctic.
Semafor Tech1 min readChina expands ultra-deep oil and gas drilling efforts
China broke oil and gas production records in 2025, though it has hastened its efforts this year in a bid to shield itself from war-related vicissitudes in global energy markets.
Semafor Tech1 min readIndia’s bullet train project delays spark tensions with Japan
India’s first bullet train is yet to transport a single passenger 10 years after the joint project with Japan broke ground.
Semafor Tech1 min readFormer German spy chief charged with treason
August Hanning, who left Germany’s foreign intelligence service in 2005, is its first former chief to face charges.
Semafor Tech1 min readBulgarian tankers struck in Black Sea as shipping fears mount
Drones struck two tankers in the Black Sea near Bulgaria on Tuesday, in the first attack on shipping in the NATO member’s exclusive economic zone.
Semafor Tech1 min readFrench budget crisis worsens amid student protests
A pre-election debt selloff, lame-duck government, and massive demonstrations have raised fears that Paris’ budgetary crisis is untameable.
Semafor Tech1 min readCDC ‘closely monitoring’ suspected pneumonic plague case
The agency said there is “no indication of a broader threat to the United States” at this time.
Semafor Tech2 min readA Starbucks-Chipotle tie-up might be crazy enough to work
People close to the company tell Semafor that Chipotle hasn’t received a takeover bid, but one theory — that Starbucks could take over the Mexican fast-food chain — keeps coming up.
Semafor Tech2 min readIberdrola becomes the world's largest power provider by market cap
Iberdrola’s growing strength comes from its broader global footprint.
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