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pollen

两个人站在靠近冰水和冰川的雪景中,举着一根大约是他们两倍高的黑色杆子。
Posted inResearch Spotlights

微生物能在地球大气中繁衍生息吗?还是仅能勉强存活?

by Rebecca Owen 25 September 202525 September 2025

一种自下而上的建模方法让科学家得以更深入地了解大气中的微生物群落。

Dos personas se encuentran en un paisaje nevado, cerca de aguas heladas y glaciares, sosteniendo un poste negro que tiene aproximadamente el doble de su altura.
Posted inResearch Spotlights

¿Pueden los microorganismos prosperar en la atmósfera terrestre o simplemente sobreviven allí?

by Rebecca Owen 9 September 20259 September 2025

Un enfoque de modelización ascendente podría acercar a los científicos a la comprensión de las comunidades de microbios en la atmósfera.

Two people stand in a snowy landscape near icy water and glaciers, holding up a black pole that is about twice as tall as them.
Posted inResearch Spotlights

Can Microorganisms Thrive in Earth’s Atmosphere, or Do They Simply Survive There?

by Rebecca Owen 7 August 202525 September 2025

A bottom-up modeling approach could bring scientists closer to understanding communities of microbes in the atmosphere.

Diagram from the paper.
Posted inEditors' Highlights

Simulating the Journey of Pollen in the Atmosphere

by Jiwen Fan 19 June 202314 June 2023

A new study couples an emission and transport scheme of pollen from vegetation, and explores pollen’s evolution in different atmospheric conditions and its impacts on clouds and precipitation.

Photograph of a rocky hillslope with two people sitting at the top, in the distance.
Posted inNews

UV Radiation Contributed to Earth’s Biggest Mass Extinction

Rachel Fritts, Science Writer by Rachel Fritts 10 February 202327 February 2023

To find the first direct evidence of heightened UV radiation during the end-Permian mass extinction, researchers turned to chemical evidence preserved in pollen grains.

Illustration of the Giza pyramids, one under construction, along the Nile.
Posted inNews

Ancient Nile Tributary May Have Aided Pyramid Construction

by Jennifer Schmidt 6 October 20227 February 2023

Pollen from sediment cores shows that a now dry channel cutting through Giza was once a flowing waterway that Egyptian pyramid builders could have used to transport supplies.

Fiona Lo presenting her Ph.D. thesis at the American Meteorological Society annual conference.
Posted inFeatures

Fiona Lo: A “Really Long, Convoluted Path” to Health

Richard Sima, freelance science writer by Richard J. Sima 25 July 20227 February 2023

Lo uses her background in atmospheric sciences to forecast pollen concentrations.

Photo and illustration of leaves from the Paleocene era with bites left by insects
Posted inNews

Chicxulub Impact Changed Tropical Rain Forest Biodiversity Forever

by Humberto Basilio 3 May 20217 February 2023

Sixty-six million years ago, an asteroid reset most of life on Earth. But without this catastrophic event, the composition of neotropical rain forests wouldn’t be the same.

Cave entrance with vegetation in background
Posted inNews

Bat Guano Traces Changes in Agriculture and Hurricane Activity

Katherine Kornei, Science Writer by Katherine Kornei 13 October 202010 March 2023

Researchers hiked and rappeled into two caves in Jamaica to collect over 40 kilograms of excrement.

Close-up of a woman blowing her nose while standing in front of a field of flowers
Posted inScience Updates

Eyes in the Sky Improve Pollen Tracking

by G. R. Asrar, Y. Zhou, T. M. Crimmins and A. Sapkota 20 July 20207 February 2023

Physicians, public health officials, and experts in remote sensing and ecology recently met to identify ways that satellites, webcams, and crowdsourced science could help them manage asthma and allergies.

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Research Spotlights

Droughts Sync Up as the Climate Changes

18 September 202518 September 2025
Editors' Highlights

Unexpected Carbonate Phase Revealed by Advanced Simulations

25 September 2025
Editors' Vox

How Glacial Forebulges Shape the Seas and Shake the Earth

23 September 202519 September 2025
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