内容摘要：Tonyei Phawang, the Angh, or chief, walks in his house which is divided between Myanmar and India at Longwa village in the far eastern India state of Nagaland, Thursday, Dec. 12, 2024. (AP Photo/Anupam Nath)

Tonyei Phawang, the Angh, or chief, walks in his house which is divided between Myanmar and India at Longwa village in the far eastern India state of Nagaland, Thursday, Dec. 12, 2024. (AP Photo/Anupam Nath)

A paper cutout of The Last Supper, the last supper of Jesus with the Twelve Apostles, from the Gospel of John, is seen atop the piano in the Young’s Sunbury, Ohio, home on Tuesday, Nov. 12, 2024. (AP Photo/Carolyn Kaster)Isaac Young, 5, rests his cheek on the family horse Rusty’s forehead during farm chores before homeschooling, Tuesday, Nov. 12, 2024, in Sunbury, Ohio. (AP Photo/Carolyn Kaster)

Isaac Young, 5, rests his cheek on the family horse Rusty’s forehead during farm chores before homeschooling, Tuesday, Nov. 12, 2024, in Sunbury, Ohio. (AP Photo/Carolyn Kaster)A “Pray for America” sticker is on the kitchen door of Erin and Mike Young’s home in Sunbury, Ohio, Tuesday, Nov. 12, 2024, where they live with their three adopted children, Lucas, 8, Gianna, 7, and Isaac, 5. (AP Photo/Carolyn Kaster)A “Pray for America” sticker is on the kitchen door of Erin and Mike Young’s home in Sunbury, Ohio, Tuesday, Nov. 12, 2024, where they live with their three adopted children, Lucas, 8, Gianna, 7, and Isaac, 5. (AP Photo/Carolyn Kaster)

The next afternoon on Election Day, the three children put on “Future Ohio Voter” stickers. Isaac and Lucas wore their Trump baseball hats. They piled into their dad’s truck to go to the polling place. Mom had voted earlier. Around the voting booth, they pressed their faces in close to watch dad vote for Trump.Gianna Young, 7, right, and Isaac Young, 5, pose for a photo on their farm before going to vote with adoptive parents Mike and Erin Young on Election Day, Tuesday, Nov. 5, 2024, in Sunbury, Ohio. (AP Photo/Carolyn Kaster)

Gianna Young, 7, right, and Isaac Young, 5, pose for a photo on their farm before going to vote with adoptive parents Mike and Erin Young on Election Day, Tuesday, Nov. 5, 2024, in Sunbury, Ohio. (AP Photo/Carolyn Kaster)

Gianna Young, 7, left, Isaac Young, 5, center, and Lucas Young, 8, look at books in the back seat of the truck for the trip to vote with adoptive parents Mike and Erin Young on Election Day, Tuesday, Nov. 5, 2024, in Sunbury, Ohio. (AP Photo/Carolyn Kaster)Following the 2010 tragedy, city officials, with help from public health and heat experts, devised an action plan to warn citizens when the heat is at dangerous levels and prepare city hospitals to respond rapidly to heat-related illness. The plan has been replicated across India and other parts of South Asia.

The last two years have been theand researchers hope their work can provide an additional line of defense for those who bear the brunt of increasing heat.

The Ahmedabad study is only one part of a global research project examining how heat is affecting poor, vulnerable communities in four cities across the world. Researchers also are measuring heat impacts using smartwatches and other devices in Africa’s Burkina Faso, the Pacific island of Niue near New Zealand and in the Sonoran desert region in Mexico.More than 1.1 billion people — about one-eighth of the world’s population — live in informal settlements and poor neighborhoods that are particularly vulnerable, said Aditi Bunker, environmental health researcher associated with the University of Auckland, New Zealand, and Heidelberg University, Germany, who is leading the global project.