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Metadatos

Título
(Extremadamente importante)
PNAS
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Meta descripción
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Rastreabilidad
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No se detectan problemas para acceder al sitio web.
Redirección canónica
(Importante)
https://www.pnas.org/
La página tiene una redirección canónica correcta.
Idioma
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Idioma reconocido automáticamente en el contenido: en
Idioma declarado en el código HTML: en
Ubicación geográfica del servidor: Estados Unidos de América
El idioma ha sido correctamente declarado en el código HTML: en.
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El dominio no es un subdominio.
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URL de la página
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Metaetiquetas

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citation_abstract_html_urlVacío
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pbContext;journal:journal:pnas;page:string:Home Page;requestedJournal:journal:pnas;ctype:string:Journal Content;wgroup:string:Publication Websites;website:website:pnas-site
langen
og:titlePNAS
og:typeWebsite
og:urlhttps://www.pnas.org/
og:imagehttp://www.pnas.org/pb-assets/images/Logos/header-logo/logo.svg
og:site_namePNAS
og:descriptionProceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
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Calidad de la página

Contenido
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Hay 21 textos duplicados en esta página:
  • Texto duplicado: This is an addendum toComplex viscosity of helical and doubly helical ...
La cantidad media de palabras por frase es elevada: 28.68 palabras.
El número total de palabras en la página es bueno: 1964 palabras.
Un 25.2% del contenido está constituido por palabras vacías.
Las palabras del encabezado H1 también aparecen en el cuerpo del texto.
La página contiene un listado, lo que indica una buena estructuración del contenido.
Se han encontrado 32 párrafos en esta página.
El contenido en formato texto de esta página es óptimo.
No se detecta ningún placeholder de texto ni imagen.
Frames
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Esta página no utiliza ningún frameset.
Optimización para móviles
(Poco importante)
No se ha especificado ningún icono de Apple Touch.
El valor de la etiqueta viewport es correcto: (width=device-width,initial-scale=1).
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El uso de etiquetas de negritas en esta página es óptimo. Te recomendamos emplear hasta 39 etiquetas de negritas en una página.
Optimización de imágenes
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No se detecta ninguna descripción del atributo ALT en 3 imágenes. El contenido de los atributos ALT también es evaluado como texto por los buscadores y es muy importante para la búsqueda de imágenes.
Redes Sociales
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El sitio utiliza HTTPS para transferir datos de forma segura.
Todos los archivos incluidos se transfieren a través de HTTPS.

Lista de medios

URLAtributo ALTTítulo
...Logos/header-logo/logo-1624644560537.svgPNAS LogoPNAS logo
...header-logo/logo-light-1641218818190.svgPNAS LogoPNAS logo
...Logos/header-logo/logo-1624644560537.svgPNAS
...s/icons/twitter-x-gray-1705527808743.svgCarece de atributo ALT
...ets/images/icons/icon-bluesky-mobile.pngCarece de atributo ALT
...tml/home-slider/slide0-1740500047337.jpgCarece de atributo ALT
...tml/home-slider/slide1-1740500047740.jpgPictured is an OceanX submersible collecting deep-water corals in the Red Sea. Image credit: OceanX.
...tml/home-slider/slide2-1740500047247.jpgTable coral in Palau, Micronesia.
...tml/home-slider/slide3-1731449174103.jpgAn illustration of a seesaw balancing people against a red, ominous face and hand, symbolizing manipulation or control.
...0c5/pnas.2025.122.issue-8.largecover.pngThe cover image for PNAS Vol. 122;No. 8
...home/about-section-img-1624574253010.pngabout section
...dcf-f2c0dded3c2f/media/pc.2025-02-17.jpgplaceholder
...47e-119edfb13811/media/pc.2025-02-03.jpgplaceholder
...4fa4-a95d-7fe4f2076037/pc.2025-01-06.jpgplaceholder
...0c5/pnas.2025.122.issue-8.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 8
...3d0/pnas.2025.122.issue-7.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 7
...617/pnas.2025.122.issue-6.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 6
...9f0/pnas.2025.122.issue-5.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 5
...c7e/pnas.2025.122.issue-4.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 4
...e48/pnas.2025.122.issue-3.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 3
...821/pnas.2025.122.issue-2.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 2
...fb3/pnas.2025.122.issue-1.largecover.pngThe cover image for PNAS Table of Contents Vol. 122 No. 1
...38/pnas.2024.121.issue-52.largecover.pngThe cover image for PNAS Table of Contents Vol. 121 No. 52
...gos/footer/logo-footer-1624408444100.svgPNAS logo

Estructura de la página

Encabezado H1
(Extremadamente importante)
Submit your research to PNAS and have it discovered by millions of researchers in the biological, physical, and social sciences.
Más de un encabezado H1.
El encabezado H1 es demasiado largo.
Encabezados
(Importante)
Algunos de los encabezados H se repiten dos veces.
Hay 63 encabezados H en esta página. La cantidad de encabezados debería guardar una mejor proporción en relación al texto.

Estructura de los encabezados

Jerarquía de encabezadosContenido
H1 Submit your research to PNAS and have it discovered by millions of researchers in the biological, physical, and social sciences.
H1 February 25, 2025; vol. 122 no. 8
H1 Latest in Ecology: Reproductive success decreases as coral colonies become spaced apart.
H1 Watch the short film Decoding Deception: The Psychology of Combating Misinformation
H2 Request Username
H2 Create a new account
H2 Login
H2 Change Password
H2 Current Issue
H2 PNAS is one of the world's most-cited and comprehensive multidisciplinary scientific journals.
H2 In the News
H2 Science Sessions podcasts
H2 Front Matter
H2 Featured QnAs
H2 Recent Issues
H2 Submit to PNAS
H3 In This Issue
H3 Modeling energy requirements for oxygen production on the Moon
H3 Short-term exposure to filter-bubble recommendation systems has limited polarization effects: Naturalistic experiments on YouTube
H3 Correlation of sub-centennial-scale pulses of initial Central Atlantic Magmatic Province lavas and the end-Triassic extinctions
H3 Young children distinguish the impossible from the merely improbable
H3 Path dependence, stigmergy, and memetic reification in the formation of the 27 Club myth
H3 Profile of Catherine Drennan
H3 Bodily maps of emotions
H3 Oxytocin-enforced norm compliance reduces xenophobic outgroup rejection
H3 Neural network retuning and neural predictors of learning success associated with cello training
H3 Climate effects and shifting Arctic coastlines
H3 Movies, neurons, and AI
H3 Sustainability of plant-based meat alternatives
H3 GenAI synthetic data create ethical challenges for scientists. Here’s how to address them.
H3 Greener skies? The quest for sustainable flying
H3 To enhance sustainable development goal research, open up commercial satellite image archives
H3 How towns can adapt to fire as bigger burns loom
H3 Can science-based interventions tamp down polarization?
H3 How to address solar geoengineering’s transparency problem
H3 Microbes could convert industrial wastewater into ecofriendly products
H3 Zoos must embrace animal death for education and conservation
H3 QnAs with Jeremy J. Michalek and Corey D. Harper
H3 QnAs with Shoham Choshen-Hillel and Alex Gileles-Hillel
H3 QnAs with Scott E. Heatwole and Robert F. Pfaff
H3 Sign up for thePNAS Highlights newsletter
H4 Featured Topics
H4 Articles By Topic
H4 Featured Topics Texto duplicado
H4 Articles By Topic Texto duplicado
H4 Featured Topic
H4 Articles By Topic Texto duplicado
H4 PNAS UPDATES
H4 PNAS 2025 Call for Papers in Select UN Sustainable Development Goals (SDGs)
H4 PNAS Provides Free Access to Journal Content and Publishing in Lower-Income Countries
H4 PNAS Special Feature Blog: Would vegan diets be good for human and environmental health?
H4 PNAS Special Feature Blog: Does Culture Evolve?
H4 Selected Highlights 2024
H5 Congrats!
H5 Vol. 122No. 8
H5 Vol. 122No. 7
H5 Vol. 122No. 6
H5 Vol. 122No. 5
H5 Vol. 122No. 4
H5 Vol. 122No. 3
H5 Vol. 122No. 2
H5 Vol. 122No. 1
H5 Vol. 121No. 52
Algunos textos ancla son demasiado largos.
Algunos enlaces internos contienen parámetros dinámicos. Las URL internas no deberían contener parámetros dinámicos, salvo que estén marcadas como nofollow.
Algunos textos ancla se repiten más de una vez en varios enlaces.
Hay 3 links con un texto ancla que no es suficientemente relevante.
La cantidad de enlaces internos es adecuada.
Hay 16 enlaces externos en esta página.
EnlacePropiedadesTexto ancla
https://www.pnas.org/IMG-ALT PNAS Logo
https://www.pnas.org/Texto duplicado IMG-ALT PNAS Logo
/toc/pnas/currentCurrent Issue
https://www.pnas.org/latestLatest Articles
/about/special-featuresSpecial Features
https://www.pnas.org/loi/pnasList of Issues
https://academic.oup.com/pnasn...Externo Subdominio PNAS Nexus
https://www.pnas.org/front-matterFront Matter
/author-centerInformation for Authors
/author-center/editorial-and-j...Editorial and Journal Policies
/author-center/submitting-your...Submission Procedures
/author-center/publication-cha...Publication Charges
https://www.pnas.org/Texto ancla Physical Sciences
https://www.pnas.org/Texto ancla Social Sciences
https://www.pnas.org/Texto ancla Biological Sciences
https://www.pnas.org/topic/physPhysics
https://www.pnas.org/topic/chemChemistry
/sustainability-scienceSustainability Science
/topic/app-mathApplied Mathematics
/topic/app-physApplied Physical Sciences
https://www.pnas.org/topic/astroAstronomy
/biophysics-and-computational-...Biophysics and Computational Biology
/topic/comp-sciComputer Sciences
/topic/earth-sciEarth, Atmospheric, and Planetary Sciences
https://www.pnas.org/topic/engEngineering
/environmental-sciencesEnvironmental Sciences
https://www.pnas.org/topic/mathMathematics
https://www.pnas.org/topic/statStatistics
https://www.pnas.org/anthropologyAnthropology
/sustainability-scienceTexto duplicado Sustainability Science
https://www.pnas.org/topic/demoDemography
/topic/econ-sciEconomic Sciences
/environmental-sciencesTexto duplicado Environmental Sciences
/topic/pol-sciPolitical Sciences
/psychological-and-cognitive-s...Psychological and Cognitive Sciences
/topic/soc-scienceTexto duplicado Social Sciences
https://www.pnas.org/anthropologyTexto duplicado Anthropology
/sustainability-scienceTexto duplicado Sustainability Science
https://www.pnas.org/topic/ag-sciAgricultural Sciences
/topic/app-bioApplied Biological Sciences
/topic/biochemBiochemistry
/biophysics-and-computational-...Texto duplicado Biophysics and Computational Biology
/topic/cell-bioCell Biology
/topic/dev-bioDevelopmental Biology
https://www.pnas.org/topic/ecoEcology
/environmental-sciencesTexto duplicado Environmental Sciences
/topic/evolutionEvolution
/topic/geneticsGenetics
https://www.pnas.org/topic/immunImmunology and Inflammation
/topic/med-sciMedical Sciences
/topic/microbioMicrobiology
https://www.pnas.org/topic/neuroNeuroscience
https://www.pnas.org/topic/pharmPharmacology
https://www.pnas.org/topic/physioPhysiology
/topic/plant-bioPlant Biology
/topic/pop-bioPopulation Biology
/psychological-and-cognitive-s...Texto duplicado Psychological and Cognitive Sciences
/topic/sys-bioSystems Biology
/topic/covid-19Covid-19
/action/showCart?FlowID=10 Cart
A-TITLE Show shopping cart
/action/showLoginSign in
/action/registrationRegister
/action/showLogin?redirectUri=/Individual Login
/action/ssostart?redirectUri=/Institutional Login
https://www.pnascentral.org/cg...Externo Subdominio Submit
https://www.pnas.org/Texto ancla Anywhere
https://www.pnas.org/Texto ancla Citation
https://www.pnas.org/Texto ancla Texto duplicado PNAS Nexus
https://www.pnas.org/Texto ancla Proceedings of the National Academy of Sciences
/search/advancedAdvanced Search
/action/doSearch?AllField=covi...Texto duplicado Covid-19
/action/doSearch?AllField=arti...Artificial Intelligence
/action/doSearch?AllField=mpoxMpox
/action/doSearch?AllField=clim...Climate Change
/action/doSearch?AllField=gun+...Gun Violence
https://www.pnas.org/IMG-ALT PNAS
https://www.facebook.com/pages...Externo Subdominio A-TITLE Facebook
https://twitter.com/PNASNewsExterno A-TITLE Twitter
https://bsky.app/profile/pnas.orgExterno A-TITLE Bluesky
https://www.youtube.com/channe...Externo Subdominio A-TITLE Youtube
https://www.linkedin.com/showc...Nueva ventana Externo Subdominio A-TITLE LinkedIn
/action/showPreferences?menuTa...A-TITLE Mail
https://www.pnas.org/about/rssA-TITLE RSS feeds
/about/staff-directoryContact
/about/site-mapSite Map
https://www.pnas.org/about/termsTerms & Privacy Policy
/about/accessibilityAccessibility
https://www.pnas.org/Texto ancla Skip slideshow
/author-centerSubmit your research to PNAS and have it discovered by millions of researchers in the biological, physical, and social sciences. Learn more.
/toc/pnas/122/8February 25, 2025; vol. 122 no. 8 Volume 122, Issue 8: View articles in the latest issue of PNAS.
IMG-ALT Pictured is an OceanX submersible collecting deep-water corals in the Red Sea. Image credit: OceanX.
https://doi.org/10.1073/pnas.2...Externo Latest in Ecology: Reproductive success decreases as coral colonies become spaced apart. Click to read more. Image credit: Peter J. Mumby.
IMG-ALT Table coral in Palau, Micronesia.
/post/multimedia/combating-mis...Watch the short film Decoding Deception: The Psychology of Combating Misinformation Social media and generative AI are accelerating the spread of misinformat...
IMG-ALT An illustration of a seesaw balancing people against a red, ominous face and hand, symbolizing manipulation or control.
/action/showPreferences?menuTa...sign up for alerts
/author-centerAuthor center
https://www.pnascentral.org/cg...Externo Subdominio submit
/action/showLoginReturning user
/help/cookie-policyFind out more
/help/cookie-policyCONTINUE
/action/requestResetPasswordTexto ancla no relevante
here
/action/registrationTexto duplicado Texto ancla no relevante
here
/action/ssostart?redirectUri=/Texto duplicado Institutional Login
/toc/pnas/122/8Texto duplicado Current Issue
/toc/pnas/currentIMG-ALT The cover image for PNAS Vol. 122;No. 8
A-TITLE View the PNAS Table of Contents Vol. 122;No. 8
/topic/type/twipThis Week in PNAS
/doi/10.1073/iti0825122In This Issue
A-TITLE In This Issue
/topic/type/research-articleResearch Article
/doi/10.1073/pnas.2306146122Modeling energy requirements for oxygen production on the Moon
A-TITLE Modeling energy requirements for oxygen production on the Moon
/author/Leger,+DorianDorian Leger
A-TITLE Dorian Leger
/author/Ghaffari-Tabrizi,+FardinFardin Ghaffari-Tabrizi
A-TITLE Fardin Ghaffari-Tabrizi
/author/Shaw,+MatthewMatthew Shaw
A-TITLE Matthew Shaw
/author/Rasera,+JoshuaJoshua Rasera
A-TITLE Joshua Rasera
/author/Dickson,+DavidDavid Dickson
A-TITLE David Dickson
/author/Valentin,+BaptisteBaptiste Valentin
A-TITLE Baptiste Valentin
/author/Morlock,+AntonAnton Morlock
A-TITLE Anton Morlock
/author/Thoresen,+FrejaFreja Thoresen
A-TITLE Freja Thoresen
/author/Cowley,+AidanAidan Cowley
A-TITLE Aidan Cowley
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.2318127122Short-term exposure to filter-bubble recommendation systems has limited polarization effects: Naturalistic experiments on YouTube
A-TITLE Short-term exposure to filter-bubble recommendation systems has limited polarization effects: Naturalistic experiments on YouTube
/author/Liu,+NaijiaNaijia Liu
A-TITLE Naijia Liu
/author/Hu,+Xinlan+EmilyXinlan Emily Hu
A-TITLE Xinlan Emily Hu
/author/Savas,+YaseminYasemin Savas
A-TITLE Yasemin Savas
/author/Baum,+Matthew+AMatthew A. Baum
A-TITLE Matthew A. Baum
/author/Berinsky,+Adam+JAdam J. Berinsky
A-TITLE Adam J. Berinsky
/author/Chaney,+Allison+J+BAllison J. B. Chaney
A-TITLE Allison J. B. Chaney
/author/Lucas,+ChristopherChristopher Lucas
A-TITLE Christopher Lucas
/author/Mariman,+ReiRei Mariman
A-TITLE Rei Mariman
/author/de+Benedictis-Kessner,...Justin de Benedictis-Kessner
A-TITLE Justin de Benedictis-Kessner
/author/Guess,+Andrew+MAndrew M. Guess
A-TITLE Andrew M. Guess
/author/Knox,+DeanDean Knox
A-TITLE Dean Knox
/author/Stewart,+Brandon+MBrandon M. Stewart
A-TITLE Brandon M. Stewart
/toc/pnas/currentVIEW FULL TABLE OF CONTENTS
https://www.pnas.org/aboutTexto ancla no relevante
Read More
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.2415486121Correlation of sub-centennial-scale pulses of initial Central Atlantic Magmatic Province lavas and the end-Triassic extinctions
A-TITLE Correlation of sub-centennial-scale pulses of initial Central Atlantic Magmatic Province lavas and the end-Triassic extinctions
/author/Kent,+Dennis+VDennis V. Kent
A-TITLE Dennis V. Kent
/author/Olsen,+Paul+EPaul E. Olsen
A-TITLE Paul E. Olsen
/author/Wang,+HuapeiHuapei Wang
A-TITLE Huapei Wang
/author/Schaller,+Morgan+FMorgan F. Schaller
A-TITLE Morgan F. Schaller
/author/Et-Touhami,+MohammedMohammed Et-Touhami
A-TITLE Mohammed Et-Touhami
/topic/type/brief-reportBrief Report
/doi/10.1073/pnas.2411297121Young children distinguish the impossible from the merely improbable
A-TITLE Young children distinguish the impossible from the merely improbable
/author/Stahl,+Aimee+EAimee E. Stahl
A-TITLE Aimee E. Stahl
/author/Feigenson,+LisaLisa Feigenson
A-TITLE Lisa Feigenson
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.2413373121Path dependence, stigmergy, and memetic reification in the formation of the 27 Club myth
A-TITLE Path dependence, stigmergy, and memetic reification in the formation of the 27 Club myth
/author/Dunivin,+Zackary+OkunZackary Okun Dunivin
A-TITLE Zackary Okun Dunivin
/author/Kaminski,+PatrickPatrick Kaminski
A-TITLE Patrick Kaminski
/topic/type/profileProfile
/doi/10.1073/pnas.2420751121Profile of Catherine Drennan
A-TITLE Profile of Catherine Drennan
/author/Viegas,+JenniferJennifer Viegas
A-TITLE Jennifer Viegas
/about/pnas-in-the-newsView all news
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.1321664111Bodily maps of emotions
A-TITLE Bodily maps of emotions
/author/Nummenmaa,+LauriLauri Nummenmaa
A-TITLE Lauri Nummenmaa
/author/Glerean,+EnricoEnrico Glerean
A-TITLE Enrico Glerean
/author/Hari,+RiittaRiitta Hari
A-TITLE Riitta Hari
/author/Hietanen,+Jari+KJari K. Hietanen
A-TITLE Jari K. Hietanen
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.1705853114Oxytocin-enforced norm compliance reduces xenophobic outgroup rejection
A-TITLE Oxytocin-enforced norm compliance reduces xenophobic outgroup rejection
/author/Marsh,+NinaNina Marsh
A-TITLE Nina Marsh
/author/Scheele,+DirkDirk Scheele
A-TITLE Dirk Scheele
/author/Feinstein,+Justin+SJustin S. Feinstein
A-TITLE Justin S. Feinstein
/author/Gerhardt,+HolgerHolger Gerhardt
A-TITLE Holger Gerhardt
/author/Strang,+SabrinaSabrina Strang
A-TITLE Sabrina Strang
/author/Maier,+WolfgangWolfgang Maier
A-TITLE Wolfgang Maier
/author/Hurlemann,+RenéRené Hurlemann
A-TITLE René Hurlemann
/topic/type/research-articleTexto duplicado Research Article
/doi/10.1073/pnas.1721414115Neural network retuning and neural predictors of learning success associated with cello training
A-TITLE Neural network retuning and neural predictors of learning success associated with cello training
/author/Wollman,+IndianaIndiana Wollman
A-TITLE Indiana Wollman
/author/Penhune,+VirginiaVirginia Penhune
A-TITLE Virginia Penhune
/author/Segado,+MelanieMelanie Segado
A-TITLE Melanie Segado
/author/Carpentier,+ThibautThibaut Carpentier
A-TITLE Thibaut Carpentier
/author/Zatorre,+Robert+JRobert J. Zatorre
A-TITLE Robert J. Zatorre
https://www.pnas.org/trendingView all
/doi/10.1073/pc.35284640play Climate effects and shifting Arctic coastlines
IMG-ALT placeholder
/doi/10.1073/pc.35096830play Movies, neurons, and AI
IMG-ALT placeholder
/doi/10.1073/pc.34708900play Sustainability of plant-based meat alternatives
IMG-ALT placeholder
/about/science-sessions-podcastview all episodes
/topic/type/opinionOpinion
/doi/10.1073/pnas.2409182122GenAI synthetic data create ethical challenges for scientists. Here’s how to address them.
A-TITLE GenAI synthetic data create ethical challenges for scientists. Here’s how to address them.
/author/Resnik,+David+BDavid B. Resnik
A-TITLE David B. Resnik
/author/Hosseini,+MohammadMohammad Hosseini
A-TITLE Mohammad Hosseini
/author/Kim,+Jeff+J+HJeff J.H. Kim
A-TITLE Jeff J.H. Kim
/author/Epiphaniou,+GregoryGregory Epiphaniou
A-TITLE Gregory Epiphaniou
/author/Maple,+CarstenCarsten Maple
A-TITLE Carsten Maple
/topic/type/news-featNews Feature
/doi/10.1073/pnas.2502591122Greener skies? The quest for sustainable flying
A-TITLE Greener skies? The quest for sustainable flying
/author/Battersby,+StephenStephen Battersby
A-TITLE Stephen Battersby
/topic/type/opinionTexto duplicado Opinion
/doi/10.1073/pnas.2410246122To enhance sustainable development goal research, open up commercial satellite image archives
A-TITLE To enhance sustainable development goal research, open up commercial satellite image archives
/author/Rufin,+PhilippePhilippe Rufin
A-TITLE Philippe Rufin
/author/Meyfroidt,+PatrickPatrick Meyfroidt
A-TITLE Patrick Meyfroidt
/author/Akinyemi,+Felicia+OFelicia O. Akinyemi
A-TITLE Felicia O. Akinyemi
/author/Estes,+LyndonLyndon Estes
A-TITLE Lyndon Estes
/author/Ibrahim,+Esther+ShupelEsther Shupel Ibrahim
A-TITLE Esther Shupel Ibrahim
/author/Jain,+MehaMeha Jain
A-TITLE Meha Jain
/author/Kerner,+HannahHannah Kerner
A-TITLE Hannah Kerner
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