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American Geophysical Union

Eos is a source for news and perspectives about Earth and space science, including coverage of new research, analyses of science policy, and scientist-authored descriptions of their ongoing research and commentary on issues affecting the science community.

EPA to Cancel Nearly 800 Environmental Justice Grants

29 April 2025 @ 7:43 pm

A city is blanketed in smog.The EPA plans to cancel 781 grants, almost all focused on environmental justice, according to a court document filed last week. In Woonasquatucket River Watershed Council v. Department of Agriculture, a coalition of nonprofits is challenging the Trump administration’s freezing of funding from the Biden-era Inflation Reduction Act (IRA) and Bipartisan Infrastructure Law. In the recent court document, Daniel Coogan, an administrator in the Office of Mission Support for the EPA, stated that the agency completed a grant-by-grant review of its awards to ensure that grants aligned with administration priorities. Those that were not aligned were targeted for termination.

Mexico Will Give U.S. More Water to Avert More Tariffs

29 April 2025 @ 5:47 pm

A satellite image of dry, brown land with a blue-green river winding horizontally through the center of the image.Mexican and U.S. officials announced that Mexico will immediately transfer some of its water reserves to the United States and also allow a larger share of the Rio Grande River to flow into the United States.

一些专家认为人类世应得到官方认可

29 April 2025 @ 12:54 pm

数座高低错落的烟囱将浓烟倾泻在城市上空。从建筑物的顶部可以隐约看到山脉和橙色的天空。国际地质科学联合会选择不指定新的地质时代,但这个问题还没有得到解决。

A Two-Step Approach to Training Earth Scientists in AI

29 April 2025 @ 12:53 pm

Artificial intelligence–generated depiction of two people looking at computer monitors on a desk, small images of nature scenes in circles representing different Earth science applications, and a depiction of Earth surrounded by zeros and ones representing digital data, all in front of a star-filled night sky background.Researchers learned machine learning methods during a boot camp, then applied their new knowledge to real-world research problems during a hackathon.

Calibrating Climate Models with Machine Learning

29 April 2025 @ 12:00 pm

Schematic of the calibration workflow.Using machine learning, researchers automatically calibrate a comprehensive climate model, improving simulations of difficult features and taking steps toward more reliable climate projections.

A Geologic Map of the Asteroid Belt

28 April 2025 @ 12:59 pm

A single meteor streaks across a twilight sky. Several bare trees are silhouetted against and reflect in a still lake.Scientists leveraged a global camera network and doorbell cameras to track dozens of meteorites to their asteroid families.

Glaciers Offer Clues into the Path of Fossil Fuel Pollution

28 April 2025 @ 12:58 pm

A glacier curves between two dark mountains beneath a blue sky.New research traces the origin of carbon deposited from the atmosphere onto glaciers.

Coastal Models Quantify How Natural Islands Respond to Sea Level Rise

28 April 2025 @ 12:00 pm

Photos of atoll islandsCoastal models enhance understanding of future flooding frequency on atoll islands, paving the way to explore the limits of adaptation in the face of rising sea levels and climate change.

An Air Parcel’s Journey Through the Stratosphere

25 April 2025 @ 5:57 pm

Photo of a space shuttle in front of Earth's atmosphere.The "age of stratospheric air" measures the speed of the global transport circulation in the stratosphere, which is crucial for understanding the distribution of important trace gases, like ozone.

El conocimiento fluye de ida y vuelta en el TierraFest 2025

25 April 2025 @ 4:30 pm

Cinco personas posan para la cámara con mucho maquillaje y vestuarios coloridos.El TierraFest, el festival más grande de ciencias de la Tierra en México, adopta la diversidad como medio para compartir el conocimiento de nuestro planeta.