Our year-long collaborative investigation has landed, and the findings are stark.
Every year, Europe loses 1,500km² to construction.
This is the equivalent of 600 football pitches every day, 1.5 times more than official EEA estimates.
#GreenToGrey
1/x
Every year, Europe loses 1,500km² to construction.
This is the equivalent of 600 football pitches every day, 1.5 times more than official EEA estimates.
#GreenToGrey
1/x
🚨 NEW: By the end of this video, Europe will have lost 2850m² of land to construction. That’s almost half a Premier League football pitch.
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
October 1, 2025 at 9:40 AM
Our year-long collaborative investigation has landed, and the findings are stark.
Every year, Europe loses 1,500km² to construction.
This is the equivalent of 600 football pitches every day, 1.5 times more than official EEA estimates.
#GreenToGrey
1/x
Every year, Europe loses 1,500km² to construction.
This is the equivalent of 600 football pitches every day, 1.5 times more than official EEA estimates.
#GreenToGrey
1/x
🚨 NEW: By the end of this video, Europe will have lost 2850m² of land to construction. That’s almost half a Premier League football pitch.
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
October 1, 2025 at 6:31 AM
🚨 NEW: By the end of this video, Europe will have lost 2850m² of land to construction. That’s almost half a Premier League football pitch.
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
Sinä aikana, kun katsot tämän videon, Euroopassa jyrätään 2850 neliömetriä maata rakentamisen alta.
Luontoa hävitetään Euroopassa nopeammin kuin aiemmin on arvioitu.
Long Play kertoo #GreenToGrey -projektin löydöksistä tuoreessa jutussa: www.longplay.fi/lyhyet/long-...
Video: @journalismarena.eu
Luontoa hävitetään Euroopassa nopeammin kuin aiemmin on arvioitu.
Long Play kertoo #GreenToGrey -projektin löydöksistä tuoreessa jutussa: www.longplay.fi/lyhyet/long-...
Video: @journalismarena.eu
October 1, 2025 at 9:29 AM
Sinä aikana, kun katsot tämän videon, Euroopassa jyrätään 2850 neliömetriä maata rakentamisen alta.
Luontoa hävitetään Euroopassa nopeammin kuin aiemmin on arvioitu.
Long Play kertoo #GreenToGrey -projektin löydöksistä tuoreessa jutussa: www.longplay.fi/lyhyet/long-...
Video: @journalismarena.eu
Luontoa hävitetään Euroopassa nopeammin kuin aiemmin on arvioitu.
Long Play kertoo #GreenToGrey -projektin löydöksistä tuoreessa jutussa: www.longplay.fi/lyhyet/long-...
Video: @journalismarena.eu
Chaque année, 1 500 kilomètres carrés de nature et de terres agricoles disparaissent sous les constructions en Europe. À l’aide d’images satellites et d’un modèle d’intelligence artificielle, nous révélons l’ampleur et les conséquences de cette artificialisation massive.
#GreenToGrey
#GreenToGrey
October 1, 2025 at 12:51 PM
Chaque année, 1 500 kilomètres carrés de nature et de terres agricoles disparaissent sous les constructions en Europe. À l’aide d’images satellites et d’un modèle d’intelligence artificielle, nous révélons l’ampleur et les conséquences de cette artificialisation massive.
#GreenToGrey
#GreenToGrey
🎅 Lapland tourism is eroding the wilderness it sells 🎅
Last spring, while reviewing the initial data from the #GreenToGrey project, we zoomed in on Lapland. Many of the developments in the region appeared to be linked to tourism. But was that a real trend or just anecdotal?
1/x
Last spring, while reviewing the initial data from the #GreenToGrey project, we zoomed in on Lapland. Many of the developments in the region appeared to be linked to tourism. But was that a real trend or just anecdotal?
1/x
October 2, 2025 at 2:02 PM
🎅 Lapland tourism is eroding the wilderness it sells 🎅
Last spring, while reviewing the initial data from the #GreenToGrey project, we zoomed in on Lapland. Many of the developments in the region appeared to be linked to tourism. But was that a real trend or just anecdotal?
1/x
Last spring, while reviewing the initial data from the #GreenToGrey project, we zoomed in on Lapland. Many of the developments in the region appeared to be linked to tourism. But was that a real trend or just anecdotal?
1/x
Our mammoth cross-border investigation, #GreenToGrey, is a Sigma Award Winner 💚
@longplay.fi @hannanik.bsky.social @pulsa.fi @ruohosenanna.bsky.social + all our brilliant colleagues across Europe
@longplay.fi @hannanik.bsky.social @pulsa.fi @ruohosenanna.bsky.social + all our brilliant colleagues across Europe
🏆 "Sometimes it can be hard to see environmental impacts over time. This project made it easy.”
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
May 12, 2026 at 12:20 PM
Our mammoth cross-border investigation, #GreenToGrey, is a Sigma Award Winner 💚
@longplay.fi @hannanik.bsky.social @pulsa.fi @ruohosenanna.bsky.social + all our brilliant colleagues across Europe
@longplay.fi @hannanik.bsky.social @pulsa.fi @ruohosenanna.bsky.social + all our brilliant colleagues across Europe
Relevante internationale Klima-Recherche #GreenToGrey 👇🏻
🚨 NEW: By the end of this video, Europe will have lost 2850m² of land to construction. That’s almost half a Premier League football pitch.
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
October 1, 2025 at 10:30 AM
Relevante internationale Klima-Recherche #GreenToGrey 👇🏻
Kyseessä siis #GreenToGrey -projekti, jossa @longplay.fi (@hannanik.bsky.social , @pulsa.fi ja minä)
oli mukana. Kartoitimme ison toimittajajoukon ja norjalaisten tutkijoiden voimin, miten paljon maata rakentaminen söi Euroopassa vuosina 2018-2023.
Videolla selitän, miten selvitys tehtiin.
2/x
oli mukana. Kartoitimme ison toimittajajoukon ja norjalaisten tutkijoiden voimin, miten paljon maata rakentaminen söi Euroopassa vuosina 2018-2023.
Videolla selitän, miten selvitys tehtiin.
2/x
Long Play tutki rakentamisen aiheuttamaa luontokatoa #GreenToGray -projektissa kymmenen muun median kanssa. Videolla toimittaja Lotta Närhi kertoo, miten selvitys tehtiin.
Tuloksista kerrotaan Long Playn tuoreessa jutussa "Pois alta risut ja männynkävyt". Lue tai kuuntele juttu Long Playn sivuilta!
Tuloksista kerrotaan Long Playn tuoreessa jutussa "Pois alta risut ja männynkävyt". Lue tai kuuntele juttu Long Playn sivuilta!
October 1, 2025 at 7:37 AM
Kyseessä siis #GreenToGrey -projekti, jossa @longplay.fi (@hannanik.bsky.social , @pulsa.fi ja minä)
oli mukana. Kartoitimme ison toimittajajoukon ja norjalaisten tutkijoiden voimin, miten paljon maata rakentaminen söi Euroopassa vuosina 2018-2023.
Videolla selitän, miten selvitys tehtiin.
2/x
oli mukana. Kartoitimme ison toimittajajoukon ja norjalaisten tutkijoiden voimin, miten paljon maata rakentaminen söi Euroopassa vuosina 2018-2023.
Videolla selitän, miten selvitys tehtiin.
2/x
Rakentaminen syö Euroopassa enemmän maata kuin aiemmin on arvioitu.
Kun rakentamisen alle jääneen luonnon määrän suhteuttaa asukaslukuun, Suomi on Euroopan toiseksi pahin luonnon tuhoaja.
Long Play tutki rakentamisen luontovaikutuksia eurooppalaisten medioiden #GreenToGrey -yhteistyöhankkeessa.
Kun rakentamisen alle jääneen luonnon määrän suhteuttaa asukaslukuun, Suomi on Euroopan toiseksi pahin luonnon tuhoaja.
Long Play tutki rakentamisen luontovaikutuksia eurooppalaisten medioiden #GreenToGrey -yhteistyöhankkeessa.
Long Play tutki rakentamisen vaikutuksia luontoon Euroopassa: maata uhrataan Ahvenanmaan verran joka vuosi
www.longplay.fi
October 2, 2025 at 3:18 PM
Rakentaminen syö Euroopassa enemmän maata kuin aiemmin on arvioitu.
Kun rakentamisen alle jääneen luonnon määrän suhteuttaa asukaslukuun, Suomi on Euroopan toiseksi pahin luonnon tuhoaja.
Long Play tutki rakentamisen luontovaikutuksia eurooppalaisten medioiden #GreenToGrey -yhteistyöhankkeessa.
Kun rakentamisen alle jääneen luonnon määrän suhteuttaa asukaslukuun, Suomi on Euroopan toiseksi pahin luonnon tuhoaja.
Long Play tutki rakentamisen luontovaikutuksia eurooppalaisten medioiden #GreenToGrey -yhteistyöhankkeessa.
#GreentoGrey -projektia koordinoi @journalismarena.eu. Mukana myös NRK, Le Monde, Die Zeit, Reporters United, Facta, De Standaard, Gazeta Wyborcza, Datadista, The Black Sea ja The Guardian. Long Playn metsätoimitusta rahoittaa @koneensaatio.fi, ja hanketta tuki myös @journalismfund.bsky.social
5/5
5/5
October 1, 2025 at 7:39 AM
#GreentoGrey -projektia koordinoi @journalismarena.eu. Mukana myös NRK, Le Monde, Die Zeit, Reporters United, Facta, De Standaard, Gazeta Wyborcza, Datadista, The Black Sea ja The Guardian. Long Playn metsätoimitusta rahoittaa @koneensaatio.fi, ja hanketta tuki myös @journalismfund.bsky.social
5/5
5/5
🎬 #GreenToGrey is officially a 'blockbuster climate investigation'! Thanks to Diego Arguedas Ortiz for interviewing our journalists Zeynep Şentek and Léopold Salzenstein about the process of building the G2G project.
[1/2] Link in thread👇
[1/2] Link in thread👇
October 6, 2026 at 10:29 AM
🎬 #GreenToGrey is officially a 'blockbuster climate investigation'! Thanks to Diego Arguedas Ortiz for interviewing our journalists Zeynep Şentek and Léopold Salzenstein about the process of building the G2G project.
[1/2] Link in thread👇
[1/2] Link in thread👇
#GreenToGrey, a groundbreaking data journalism collaboration between Arena and 11 news teams across Europe, reveals the scale of nature and cropland loss across the continent.
Check it out 👇
Check it out 👇
🚨 NEW: By the end of this video, Europe will have lost 2850m² of land to construction. That’s almost half a Premier League football pitch.
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
This rate of loss, amounting to 600 football pitches a day, is 1.5 times higher than official EEA estimates.
This is the #GreenToGrey project. [1/3]
October 1, 2025 at 8:26 AM
#GreenToGrey, a groundbreaking data journalism collaboration between Arena and 11 news teams across Europe, reveals the scale of nature and cropland loss across the continent.
Check it out 👇
Check it out 👇
The #DataJournalism methodology behind our pioneering #GreenToGrey project can be found in the Nature Communications journal, thanks to our scientific partner Zander Venter @ninanatureresearch.bsky.social!
Arena supports not only cross-border, but cross-disciplinary journalism: greentogrey.eu [1/2]
Arena supports not only cross-border, but cross-disciplinary journalism: greentogrey.eu [1/2]
April 15, 2026 at 8:34 AM
The #DataJournalism methodology behind our pioneering #GreenToGrey project can be found in the Nature Communications journal, thanks to our scientific partner Zander Venter @ninanatureresearch.bsky.social!
Arena supports not only cross-border, but cross-disciplinary journalism: greentogrey.eu [1/2]
Arena supports not only cross-border, but cross-disciplinary journalism: greentogrey.eu [1/2]
Thanks to FTM for including #GreenToGrey in their Europe Uncovered newsletter this week 🌍 greentogrey.eu
📥This week in Europe Uncovered: Barcelona’s wine flows into Russia’s weapons pipeline; EU safeguards fail on dangerous doctors; and Europe keeps paving over what little nature is left.
@istories.bsky.social @journalismarena.eu mediapart.fr @vsquare.bsky.social @apache.be @danwatch.dk
@istories.bsky.social @journalismarena.eu mediapart.fr @vsquare.bsky.social @apache.be @danwatch.dk
Spanish wine & Russian weapons, dangerous doctors and vanishing nature
Follow the Money - Platform for investigative journalism
www.ftm.eu
October 6, 2025 at 9:13 AM
Thanks to FTM for including #GreenToGrey in their Europe Uncovered newsletter this week 🌍 greentogrey.eu
#GreenToGrey: “Very soon if we continue to allow piecemeal developments across areas of outstanding natural beauty, they are going to cease to have any landscape value,” says Jackie Copley of @cprecountryside.bsky.social
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Bluesky
ofcprecountryside.bsky.social
October 2, 2025 at 10:16 AM
#GreenToGrey: “Very soon if we continue to allow piecemeal developments across areas of outstanding natural beauty, they are going to cease to have any landscape value,” says Jackie Copley of @cprecountryside.bsky.social
www.theguardian.com/environment/...
www.theguardian.com/environment/...
💚 Thanks to Rina Tsubaki for this interview with Arena journalists @zeynepsentek.bsky.social and @jelena-prtoric.bsky.social on our Sigma Award-winning #GreenToGrey project.
informa-forests.eu/from-satelli...
informa-forests.eu/from-satelli...
From satellite imagery to AI: Learning from Green to Grey, a science-geared cross-border investigative journalism - Informa Forests
By Rina Tsubaki
informa-forests.eu
July 8, 2026 at 10:30 AM
💚 Thanks to Rina Tsubaki for this interview with Arena journalists @zeynepsentek.bsky.social and @jelena-prtoric.bsky.social on our Sigma Award-winning #GreenToGrey project.
informa-forests.eu/from-satelli...
informa-forests.eu/from-satelli...
[2/3] #GreenToGrey, a groundbreaking data journalism collaboration between Arena and 11 news teams across Europe, reveals the scale of nature and cropland loss across the continent.
Today we’re publishing this investigation initiated by Arena and NRK 🇳🇴, the first of its kind in Europe, alongside:
Today we’re publishing this investigation initiated by Arena and NRK 🇳🇴, the first of its kind in Europe, alongside:
October 1, 2025 at 6:31 AM
[2/3] #GreenToGrey, a groundbreaking data journalism collaboration between Arena and 11 news teams across Europe, reveals the scale of nature and cropland loss across the continent.
Today we’re publishing this investigation initiated by Arena and NRK 🇳🇴, the first of its kind in Europe, alongside:
Today we’re publishing this investigation initiated by Arena and NRK 🇳🇴, the first of its kind in Europe, alongside:
[3/3]
Datadista 🇪🇸
De Standaard 🇧🇪
Die Zeit 🇩🇪
Facta 🇮🇹
Gazeta Wyborcza 🇵🇱
Le Monde 🇫🇷
Long Play 🇫🇮
Reporters United 🇬🇷
The Black Sea 🇹🇷
The Guardian 🇬🇧
And our scientist partners at NINA 🇳🇴
Read more and find out how to take action at greentogrey.eu | #GreenToGrey
Datadista 🇪🇸
De Standaard 🇧🇪
Die Zeit 🇩🇪
Facta 🇮🇹
Gazeta Wyborcza 🇵🇱
Le Monde 🇫🇷
Long Play 🇫🇮
Reporters United 🇬🇷
The Black Sea 🇹🇷
The Guardian 🇬🇧
And our scientist partners at NINA 🇳🇴
Read more and find out how to take action at greentogrey.eu | #GreenToGrey
greentogrey.eu
October 1, 2025 at 6:31 AM
[3/3]
Datadista 🇪🇸
De Standaard 🇧🇪
Die Zeit 🇩🇪
Facta 🇮🇹
Gazeta Wyborcza 🇵🇱
Le Monde 🇫🇷
Long Play 🇫🇮
Reporters United 🇬🇷
The Black Sea 🇹🇷
The Guardian 🇬🇧
And our scientist partners at NINA 🇳🇴
Read more and find out how to take action at greentogrey.eu | #GreenToGrey
Datadista 🇪🇸
De Standaard 🇧🇪
Die Zeit 🇩🇪
Facta 🇮🇹
Gazeta Wyborcza 🇵🇱
Le Monde 🇫🇷
Long Play 🇫🇮
Reporters United 🇬🇷
The Black Sea 🇹🇷
The Guardian 🇬🇧
And our scientist partners at NINA 🇳🇴
Read more and find out how to take action at greentogrey.eu | #GreenToGrey
Long Play tutki rakentamisen aiheuttamaa luontokatoa #GreenToGray -projektissa kymmenen muun median kanssa. Videolla toimittaja Lotta Närhi kertoo, miten selvitys tehtiin.
Tuloksista kerrotaan Long Playn tuoreessa jutussa "Pois alta risut ja männynkävyt". Lue tai kuuntele juttu Long Playn sivuilta!
Tuloksista kerrotaan Long Playn tuoreessa jutussa "Pois alta risut ja männynkävyt". Lue tai kuuntele juttu Long Playn sivuilta!
October 1, 2025 at 7:36 AM
Nature in Europe is being lost piece by piece. Using our method, journalists from 11 countries have uncovered the extent of the nature loss. www.theguardian.com/environment/...
The #greentogrey project was coordinated by @journalismarena.eu in collaboration with NRK.
The #greentogrey project was coordinated by @journalismarena.eu in collaboration with NRK.
Revealed: Europe losing 600 football pitches of nature and crop land a day
Investigation shows extent of green land lost across UK and mainland Europe to development from 2018 to 2023
www.theguardian.com
October 1, 2025 at 10:31 AM
Nature in Europe is being lost piece by piece. Using our method, journalists from 11 countries have uncovered the extent of the nature loss. www.theguardian.com/environment/...
The #greentogrey project was coordinated by @journalismarena.eu in collaboration with NRK.
The #greentogrey project was coordinated by @journalismarena.eu in collaboration with NRK.
#Impact news: one month after publication, our #GreenToGrey investigation has been read and watched by over 3 MILLION people around the world.
A huge thanks to everyone who worked on, read and shared this work, by a consortium of journalists and scientists across Europe [link in thread].
A huge thanks to everyone who worked on, read and shared this work, by a consortium of journalists and scientists across Europe [link in thread].
November 24, 2025 at 11:48 AM
#Impact news: one month after publication, our #GreenToGrey investigation has been read and watched by over 3 MILLION people around the world.
A huge thanks to everyone who worked on, read and shared this work, by a consortium of journalists and scientists across Europe [link in thread].
A huge thanks to everyone who worked on, read and shared this work, by a consortium of journalists and scientists across Europe [link in thread].
🏆 "Sometimes it can be hard to see environmental impacts over time. This project made it easy.”
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
May 11, 2026 at 10:34 AM
🏆 "Sometimes it can be hard to see environmental impacts over time. This project made it easy.”
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
#GreenToGrey is a Sigma Award Winner for 2026! Our collaborative #DataJournalism investigation with 11 news teams across Europe, revealed the scale of our nature and cropland loss over 6 years.
🧵👇[1/3]
Nature in Europe is being lost piece by piece. No complete overview has existed on how much is disappearing – until now.
Read about how we helped journalists uncover how Europe is going from #greentogrey, coordinated by @journalismarena.eu in collaboration with NRK: www.nina.no/english/Abou...
Read about how we helped journalists uncover how Europe is going from #greentogrey, coordinated by @journalismarena.eu in collaboration with NRK: www.nina.no/english/Abou...
How We Helped Journalists Uncover Nature Loss in Europe
Using satellite imagery and artificial intelligence (AI), we have, together with 40 journalists and researchers from eleven countries, uncovered large-scale loss of nature and farmland across Europe.
...
www.nina.no
October 1, 2025 at 6:34 AM
Nature in Europe is being lost piece by piece. No complete overview has existed on how much is disappearing – until now.
Read about how we helped journalists uncover how Europe is going from #greentogrey, coordinated by @journalismarena.eu in collaboration with NRK: www.nina.no/english/Abou...
Read about how we helped journalists uncover how Europe is going from #greentogrey, coordinated by @journalismarena.eu in collaboration with NRK: www.nina.no/english/Abou...
The findings from the #GreenToGrey project have been leading the news in Norway today. Yet, Ireland isn’t far behind when it comes to converting nature and farmland per capita to make way for construction, housing, roads, luxury developments, etc. Has this been getting much coverage back home?
Again Norway tops a not so nice list, of nature and farmland consumption per capita for construction and "development". But all countries in Europe are on a slippery slope to piece by piece nature destruction. There is an urgent need to stop this nature crisis.
Full story www.nrk.no/dokumentar/x...
Full story www.nrk.no/dokumentar/x...
October 1, 2025 at 6:41 PM
The findings from the #GreenToGrey project have been leading the news in Norway today. Yet, Ireland isn’t far behind when it comes to converting nature and farmland per capita to make way for construction, housing, roads, luxury developments, etc. Has this been getting much coverage back home?
Want to know how we reached millions of people with the #GreenToGrey investigation? This week, I wrote up our comms and impact process for @tbij.bsky.social's newsletter The Spark.
[1/2] #journalism #impact
the-spark-tbij.beehiiv.com/p/green-to-g...
[1/2] #journalism #impact
the-spark-tbij.beehiiv.com/p/green-to-g...
‘Green to Grey’ captured Europe’s changing landscape
How an investigation grew from a single-country story to a worldwide citizen science app
the-spark-tbij.beehiiv.com
November 12, 2025 at 10:10 AM
Want to know how we reached millions of people with the #GreenToGrey investigation? This week, I wrote up our comms and impact process for @tbij.bsky.social's newsletter The Spark.
[1/2] #journalism #impact
the-spark-tbij.beehiiv.com/p/green-to-g...
[1/2] #journalism #impact
the-spark-tbij.beehiiv.com/p/green-to-g...