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For now, the rule change applies only to tailpipe emissions from cars and trucks, but it is expected to be the first step in a broader rollback of federal air pollution regulations. Full repeal will require a lengthy process; the original finding took two years to establish.

According to Axios, the move will slow U.S. emissions reductions by about 10%—a significant impact, but not enough to reverse the overall trend, as low-cost renewables now dominate new power generation capacity. The Environmental Defense Fund warned that the rollback will increase pollution and impose real costs and harms on American families.

If left unchecked, climate change is projected to raise U.S. mortality rates by roughly 2% and reduce global GDP by 17% (about $38 trillion) by 2050.

Roger Luo said:A symbolic rollback with limited immediate impact, yet it reshapes the legal terrain for future climate action and signals federal regulatory retreat.

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(Facebook Becomes Source Of Climate Research Data)

Scientists need this to understand climate risks. They look at sea level rise and extreme weather. They see where people might be in danger. The data helps predict which areas flood or face heat waves. It also tracks how communities change after disasters.

Facebook worked with experts to make this data useful. It covers many countries around the world. The information is free for researchers. It includes population density maps updated often. These maps show how neighborhoods expand or shrink.

Privacy matters in this project. Facebook removes personal details. No individual user data gets shared. The maps combine many anonymous signals. This protects people while helping science.

Governments and aid groups use these maps too. They plan for climate emergencies. They decide where to build flood barriers or evacuation routes. The data reveals patterns hard to see otherwise. For example it shows migration from coastal towns.

Weather agencies also benefit. They combine Facebook data with satellite images. This improves flood forecasting models. It helps farmers prepare for droughts.

(Facebook Becomes Source Of Climate Research Data)

Facebook’s data fills gaps in climate research. Traditional methods take longer and cost more. Now scientists access real-time human settlement patterns. This speeds up vital climate studies.