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A polar bear stands atop an ice floe in the Beaufort Sea. Credit: Crew and Officers of NOAA Ship Fairweather , CC BY 2.0

Haze hovers over part of Mexico City in February 2016. Credit: Artanva/Wikimedia Commons , CC BY-SA 4.0

A group of scientists gathers soil samples at a critical zone observatory site in Australia. Credit: Maya Almaraz

Pseudo-nitzschia diatoms form chains visible under a light microscope. Credit: California Department of Public Health

Planet Labs image from 28 August 2026 showing the aftermath of the 26 August 2026 landslide in Nepal. Image via Watanave Lab.

NASA’s Solar Dynamics Observatory captured this image of a strong solar flare on 8 May 2024. The image shows a blend of 171- and 131-angstrom light, subsets of extreme ultraviolet light. Credit: NASA/SDO

New research takes a high-resolution, hourly look at how natural and urban hydrologies interact on the island nation of Singapore. Here an aerial view shows the Gardens by the Bay in Singapore, including the shell-like Cloud Forest and Flower Dome conservatories alongside the Supertree Grove. Credit: Zion C/Unsplash

Two people stand near a footbridge that was destroyed in the Bright Angel flash flood on the afternoon of 29 August. Monsoon rains, following drought conditions and a 2025 fire in the area, combined to lead to dangerous flash flooding in the Grand Canyon. Credit: Grand Canyon National Park Service , CC BY 4.0

Artist concept of NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission. Credit: NASA

Global warming will exceed 1.5°C (2.7°F), likely within the next few years, according to a United Nations Environment Programme Report. Credit: NASA/JSC , Public Domain

Smoke from the Skinny’s Road Fire blurs spruce forest near Fairbanks, Alaska, in June 2013. Credit: U.S. Geological Survey/photo by Jeremy Littell

A schematic of an open-system mantle melting and melt migration process, as modeled by Ozawa [2001] and implemented in the new GUI. As (a) an assemblage of minerals upwells and (b) crosses the solidus and begins melting, the melt is retained along grain boundaries up to a certain critical melt fraction f c . Then (c) melt begins to migrate vertically (making it an open system), and the model trac…

Pseudomonas aeruginosa , seen here, are bacteria that can cause blood, lung, and urinary tract infections, among others. Some types of this bacteria are resistant to nearly all antibiotics. Here different antibiotics (the gray dots) are being tested against the bacteria. The white area around the dots represents antibiotics’ zones of inhibition. Credit: HansN/Wikimedia Commons , CC BY-SA 4.0

La Margarita, a community along Puerto Rico’s southern coast, may appear sunny and safe. But the community faces hazards including flooding, storm exposure, crumbling infrastructure, and inadequate government investment. Credit: Alexander Vázquez Cortés