内容摘要：Over the last century or so, there’s more carbon-12 in the atmosphere compared to carbon-13 and less carbon-14 in recent decades, according to NOAA. Carbon-12 is essentially fossil carbon from long ago, as in fossil fuels. So the change in the ratio of carbon-12 to carbon-13 tells scientists the carbon in the air is more from burning fossil fuels than natural carbon, Vecchi said.

Over the last century or so, there’s more carbon-12 in the atmosphere compared to carbon-13 and less carbon-14 in recent decades, according to NOAA. Carbon-12 is essentially fossil carbon from long ago, as in fossil fuels. So the change in the ratio of carbon-12 to carbon-13 tells scientists the carbon in the air is more from burning fossil fuels than natural carbon, Vecchi said.

At least six passenger planes were struck, including three belonging to Yemenia Airways, the country’s flag-carrying airline, he said. That leaves the airline with only one functional aircraft, which was spared only because it had left earlier in the day on a flight to Amman, Jordan. He put overall damage there at $500 million.With the damage, the airport was now out of service, al-Shaif said.

The International Committee of the Red Cross said the strikes on the airport, as well as earlier Israeli strikes on Hodeida’s seaport, affected “vital gateways for humanitarian aid and basic essentials such as food and medical supplies.”“After more than a decade of conflict in Yemen, civilians and the infrastructure they rely on cannot endure any further strain,” it added.The Houthis had been waging

against commercial and military ships in the region in what the group’s leadership has described as an effort to end Israel’s offensive against Hamas in the Gaza Strip.From November 2023 until January 2025, the Houthis targeted more than 100 merchant vessels with missiles and drones, sinking two of them and

. That has greatly reduced the flow of trade through the Red Sea corridor, which typically sees $1 trillion of goods move through it annually.

The Houthis paused attacks in a self-imposed ceasefire until the U.S. launched a broad assault against the rebels in mid-March. Meanwhile, a wider, decadelong war in Yemen between the Houthis and the country’s exiled government, backed by a Saudi-led coalition, remains in a statemate.Palestinians carry the bodies of those who were killed in an overnight Israeli airstrike, during their funeral in Khan Younis, Gaza Strip, Sunday, May 11, 2025. (AP Photo/Abdel Kareem Hana)

Palestinians carry the bodies of those who were killed in an overnight Israeli airstrike, during their funeral in Khan Younis, Gaza Strip, Sunday, May 11, 2025. (AP Photo/Abdel Kareem Hana)Fifty-nine hostages are still in Gaza, around a third of them believed to be alive. Most of the rest were released in ceasefire agreements or other deals. The Hostages Families Forum, the grassroots forum representing most hostage families, said Alexander’s release “must mark the beginning of a comprehensive agreement” that will free everyone.

Trump, whose administration has voiced full support for Israel’s actions,, Qatar and the United Arab Emirates this week in a regional tour.