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Keith Kloor

Collide-a-Scape

Question of the Day

Two images from the field show a chestnut sprout and a closeup of the fungus. The canker fungus, Cryphonectria parasitica, is responsible for widespread loss of American chestnut trees from the forest canopy and resprouting branches of an infected tree, which are girdled and killed by the fungus before they can reach the canopy or reproduce. 

CREDIT: Claire Karban


Two images show a chestnut sprout and the Cryphonectria parasitica fungus

The fungus has decimated chestnut trees in the national park, and larger trees have been slow to replace them.

Chestnut Blight Has Significantly Altered the Composition of Shenandoah National Park

With a breeding population of up to 16 million, snow geese are among the most abundant of migratory birds (Credit: William Powell, USFWS, Public Domain)

The Journey of 10 Billion Birds

Worldwide, over 10 billion birds are on the wing this fall; learn how you can help monitor and protect them

Nearly all of Earth's surface was warmer than average in August, with a very significant portion being much warmer or record warm. Altogether, the global average temperature was the highest in records dating back to the 1800s. (Credit: NOAA)

August 2024 Was Record Warm Globally

It was the hottest August in records dating back to the 1800s — and the heat goes on.

Earth Just Had its 15th Straight Month of Record Setting Temperatures

An oblique view from the International Space Station looking eastward over the northwest Atlantic Ocean. A new federal report finds that 2023 was Earth's least cloudy year on record. (Credit: NASA Earth Observatory)

Cloudscape at Dawn as Seen from Space

Part 3 of a three-part series summarizing the findings of a new and unsettling report on climate change.

From Dissipating Clouds to Record-Setting Areas of Drought, the State of the Climate in 2023 Was Shockingly Severe 

This simulated 3D visualization shows the distribution of carbon dioxide in the atmosphere during a single day in May of 2023. During that month, the average concentration of the heat-trapping greenhouse gas peaked at a new record high. This year's peak was even higher, continuing a steady climb to levels not seen for millions of years, and driving global temperatures ever higher. (Credit: NASA Earth Observatory)

CO2: The Global Heating Blanket

Part 1 of a three-part series summarizing the findings of a new and unsettling report on climate change.

Disturbing New Details Emerge About the State of the Global Climate

A National Oceanic and Atmospheric Administration diver surveys corals that have become bleached by warming sea temperatures. (Credit: NOAA)

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