The U.S. Is Pulling Back on Energy Efficiency

The Trump administration is undoing fuel-saving efforts even as war in Iran, data centers and heat waves are pushing up gasoline and electricity costs.A dishwasher at a General Electric plant in Louisville, Ky. The Energy Department has moved to repeal 17 standards for dishwashers, washing machines,

B Brad Plumer

Trump to Impose 50% Tariff on Many Canadian Goods

The administration will use an untested legal provision to put significant duties on Canadian exports, reigniting a clash with one of America’s biggest trading partners.The tariffs, which go into effect in 30 days, would be imposed on a range of Canadian exports, including wine and dairy products.

A Ana Swanson and Ian Austen

A New Threat to Global Shipping, and a Huge Drop-Off in Food Stamps

Plus, when A.I. writes your biography.The Iran-backed Houthi militia in Yemen on Monday said it would impose a maritime blockade on Saudi Arabia, a U.S. ally, in a move that threatened to open a new front in the regional war and further disrupt global energy supplies.

T Tracy Mumford, Will Jarvis, Margaret Kadifa, Jake Lucas, Ian Stewart, Jason DeParle and Kashmir Hill

New UK Prime Minister Burnham Promises Hope and Change. The Hurdles Are High.

Britain’s new prime minister, Andy Burnham, promised policies that would give average Britons financial “breathing space.” His opponents are already doling out criticism.Prime Minister Andy Burnham speaking in front of 10 Downing Street on Monday. “We will make this moment a circuit breaker for Brit

M Michael D. Shear

UK’s New Prime Minister Burnham Orders Cut in Taxes on Electricity

Prime Minister Andy Burnham moved quickly to confront the high cost of living. And President Trump wished him well after a phone call between the two leaders.Prime Minister Andy Burnham of Britain outside No. 10 Downing Street on Monday. In a statement, Mr. Burnham said that he wanted “to give peopl

M Michael D. Shear

Inside Andy Burnham’s 1st Day as U.K. Prime Minister

As Andy Burnham became Britain’s seventh leader in a decade on Monday, he tried to show that he will govern differently.King Charles III welcoming Mr. Burnham at Buckingham Palace.

S Stephen Castle, Michael D. Shear and Megan Specia

Houthis in Yemen Edge Closer to Entering U.S.-Iran War

The Iran-backed Houthi militia in Yemen has declared a Red Sea blockade on Saudi Arabia, potentially opening up a new front in the war rippling across the Middle East.Yemeni supporters of the Iran-backed Houthi movement gather during a rally against what the group says are restrictions imposed by th

I Ismaeel Naar

When Protesters Speak, Zelensky Listens, in the Ukrainian Tradition

With anger high over the firing of the defense minister, the president’s office is signaling an openness to compromise.A photograph released by the Ukrainian Presidential Press Service on Monday showing President Volodymyr Zelensky meeting with Gen. Mykhailo Drapaty, the commander of the Joint Force

A Andrew E. Kramer

Once Anti-Abortion, Now a Progressive: The Evolution of a Maine Democrat

Troy Jackson, who is expected to become his party’s nominee in the state’s marquee Senate race, has long been an economic populist, but his positions on social issues have changed markedly over time.Troy Jackson is expected to become Democrats’ new nominee for the U.S. Senate after his quick consoli

R Reid J. Epstein and Beth Reinhard

What We Know About Tuesday’s Arizona Primaries

Arizona primary voters will chose nominees for governor, secretary of state and for key races that could determine control of the House.A polling site in Phoenix in 2024.

R Reis Thebault, Kellen Browning and Sejal Govindarao

The Ordeal of a 42-Day Hantavirus Quarantine: ‘I Felt Like a Prisoner’

Eighteen Americans were isolated for weeks in a Nebraska quarantine facility after being exposed to the deadly virus on a cruise ship. Many found the experience traumatic.Dr. Steve Kornfeld, who was quarantined because of hantavirus exposure, at his home in Bend, Ore., last month.

A Apoorva Mandavilli

Two Young Brothers and Their Search for Venezuela’s Dead

Winder and Deivi Delfín dug every day for 26 days to find the bodies of their mother, brother and grandmother.Winder Delfín, 17, right, and his brother Deivi, 15, during the 24th day of searching for their mother, younger brother and grandmother, who lived on the first floor of a twelve story buildi

J Julie Turkewitz and Adriana Loureiro Fernandez

The World Cup in New York and New Jersey, by the Numbers

The World Cup brought hordes of soccer fans to town, and locals flocked to watch parties. But did the games deliver on promises of an economic boon?Officials said the economic impact of the World Cup was on track to exceed expectations.

E Emma G. Fitzsimmons, David Waldstein and Stefanos Chen

The Grim Lessons of Israel’s War in Gaza

Israel has not been held accountable for its actions in Gaza. The nation and the individuals and countries enabling it to escape punishment may only benefit.

O Omer Bartov

Cyclospora Spreads Through Human Feces. How Did It Get Into Our Food Supply?

The large number of cases suggests that excrement entered the food system on a “surprising scale.”These cyclospora oocysts were found in a stool sample. The parasite infects the small intestine, causing frequent watery diarrhea that carries its oocysts, or eggs.

A Alice Callahan and Caroline Hopkins Legaspi