内容摘要：This shows the “ethical dimensions of the problem,” said University of Pennsylvania climate scientist Michael Mann. Poorer nations, such as those in Africa, and today’s youth had the least to do with causing climate change but “are going to bear the brunt of this problem.”

This shows the “ethical dimensions of the problem,” said University of Pennsylvania climate scientist Michael Mann. Poorer nations, such as those in Africa, and today’s youth had the least to do with causing climate change but “are going to bear the brunt of this problem.”

Follow Seth Borenstein on Twitter atAssociated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative

. The AP is solely responsible for all content.BENGALURU, India (AP) — Greenhouse gases, like carbon dioxide, methane, nitrous oxide and fluorinated gases, are all heating up the planet. So what are the main human activities that cause them?The biggest share of these planet-warming gasses is spewed for energy, as coal, oil and gas still provide a lot of the world’s needs. Energy for industries like steel and iron, electricity to turn the lights on in homes and buildings, and gas to fuel up cars, ships and planes, all pump carbon dioxide into the air if they’re not coming from renewable sources.

Agricultural practices, like deforestation and livestock, make up almost a fifth of the world’s emissions. Waste such as landfill, leaks from oil and gas extraction and processes like cement-making which makes carbon dioxide as a byproduct also emit greenhouse gasses.EDITOR’S NOTE: This story is part of an ongoing series answering some of the most fundamental questions around climate change, the science behind it, the effects of a warming planet and how the world is addressing it.

Carbon dioxide accounts for over three quarters of all human-caused greenhouse gases. Methane, mostly from agriculture, coal mining and disturbing peatlands and wetlands which naturally hold in the gas, makes up about 16% of greenhouse gas in the atmosphere. Nitrous oxide from agriculture practices and fluorinated gases from refrigerants are the remainder.

Some of these gases stick around longer than others. It’s estimated that carbon dioxide can hang around in the airHamas, which released

before Trump’s trip, insists on a deal that ends the war and leads to the withdrawal of Israeli forces — something Israel said that it won’t agree to.Israel’s army said on social media it wouldn’t stop until the hostages are returned and the militant group is dismantled. Israel believes as many as 23 hostages in Gaza are still alive, although Israeli authorities have expressed concern for the status of three of them.

More than 150 people had been killed in Israeli strikes in the last 24 hours, according to Gaza’s Health Ministry. It said more than 3,000 have been killed sinceOn Saturday afternoon, an Israeli strike killed at least four children in the Jabaliya refugee camp in the north, according to al-Awda Hospital, which received the bodies. Seven others were wounded in the strike, which hit a house. A later strike in Jabaliya killed four, the hospital said.