Raul Cerveira Lima 🇪🇺
@raulclima.bsky.social
PhD. #LightPollution: Modelling, measuring & policies #poluiçãoluminosa #IA - Institute of Astrophysics and Space Sciences University of Coimbra
Physics @ E2S Instituto Politécnico do Porto
#IAU-Inter-DivisionB-C
Also #music #environment #nature #wildlife
Physics @ E2S Instituto Politécnico do Porto
#IAU-Inter-DivisionB-C
Also #music #environment #nature #wildlife
Pinned
A tecnologia LED expandiu-se rapidamente em Portugal, aumentando a luz nocturna que pode afectar tanto a saúde humana como os ecossistemas. O Governo e o PAN querem agora travar a poluição luminosa. 💡🏭
“A iluminação LED é o eucalipto da paisagem nocturna portuguesa”
A tecnologia LED expandiu-se rapidamente em Portugal, aumentando a luz nocturna que pode afectar tanto a saúde humana como os ecossistemas. O Governo e o PAN querem agora travar a poluição luminosa.
www.publico.pt
Parabéns ao @publicoazul.bsky.social pela ótima e oportuna reportagem. Oxalá na discussão na AR se decida que a ciência deve estar presente em quaisquer decisões que se tomem e não interesses comerciais (ou populistas).
A solução para a #poluiçãoluminosa não depende de tecnologias, sim de políticas.
A solução para a #poluiçãoluminosa não depende de tecnologias, sim de políticas.
Reposted by Raul Cerveira Lima 🇪🇺
For the ultimate in end-of-week Zen, here is a video of the firefly display tonight at the massive multi-acre Gardens Aglow holiday lights exhibit on Cape Cod. Tap and turn horizontal for full-size. I hope you have had a great day!
December 8, 2025 at 3:36 AM
For the ultimate in end-of-week Zen, here is a video of the firefly display tonight at the massive multi-acre Gardens Aglow holiday lights exhibit on Cape Cod. Tap and turn horizontal for full-size. I hope you have had a great day!
Reposted by Raul Cerveira Lima 🇪🇺
Cory Doctorow and Brian Eno on Poetic technologies, December 8, 2025: This discussion will explore social technologies - how technology and social relations shape each other
New York 1pm / London 6pm www.youtube.com/watch?v=4-Al...
New York 1pm / London 6pm www.youtube.com/watch?v=4-Al...
Cory Doctorow and Brian Eno on Poetic technologies
YouTube video by Institute of David Graeber
www.youtube.com
December 6, 2025 at 7:21 PM
Cory Doctorow and Brian Eno on Poetic technologies, December 8, 2025: This discussion will explore social technologies - how technology and social relations shape each other
New York 1pm / London 6pm www.youtube.com/watch?v=4-Al...
New York 1pm / London 6pm www.youtube.com/watch?v=4-Al...
Reposted by Raul Cerveira Lima 🇪🇺
Lean Vdes a Eklöff. Non se arrepentirán.
rosameron.com/obra/manifie...
www.goodreads.com/book/show/61...
rosameron.com/obra/manifie...
www.goodreads.com/book/show/61...
Manifiesto por la oscuridad - Editorial Rosamerón
rosameron.com
December 6, 2025 at 3:18 PM
Lean Vdes a Eklöff. Non se arrepentirán.
rosameron.com/obra/manifie...
www.goodreads.com/book/show/61...
rosameron.com/obra/manifie...
www.goodreads.com/book/show/61...
Reposted by Raul Cerveira Lima 🇪🇺
Love > Hate
Next year, thousands of us will come together in London to prove it.
#Together we can show the far right has no place here.
Save the date & join us: togetheralliance.org.uk
Next year, thousands of us will come together in London to prove it.
#Together we can show the far right has no place here.
Save the date & join us: togetheralliance.org.uk
December 3, 2025 at 10:43 AM
Love > Hate
Next year, thousands of us will come together in London to prove it.
#Together we can show the far right has no place here.
Save the date & join us: togetheralliance.org.uk
Next year, thousands of us will come together in London to prove it.
#Together we can show the far right has no place here.
Save the date & join us: togetheralliance.org.uk
Reposted by Raul Cerveira Lima 🇪🇺
You can access the article for free here:
www.nature.com/articles/s41...
(Sorry for the previous link which is broken!)
www.nature.com/articles/s41...
(Sorry for the previous link which is broken!)
Satellite megaconstellations will threaten space-based astronomy - Nature
Rapidly growing satellite constellations pose a substantial threat to astronomical observations, with projections indicating that future space telescopes will have more than 96% of their exposures aff...
www.nature.com
December 3, 2025 at 9:05 PM
You can access the article for free here:
www.nature.com/articles/s41...
(Sorry for the previous link which is broken!)
www.nature.com/articles/s41...
(Sorry for the previous link which is broken!)
Reposted by Raul Cerveira Lima 🇪🇺
By 2040, ~40% of the images from Hubble Space Telescope, and more than 96% from new and future space telescopes like SPHEREx, ARRAKIHS, and Xuntian will be contaminated by internet satellite constellations.
Read our new NASA article in Nature:
nature.com/articles/s4158…
Read our new NASA article in Nature:
nature.com/articles/s4158…
December 3, 2025 at 6:55 PM
By 2040, ~40% of the images from Hubble Space Telescope, and more than 96% from new and future space telescopes like SPHEREx, ARRAKIHS, and Xuntian will be contaminated by internet satellite constellations.
Read our new NASA article in Nature:
nature.com/articles/s4158…
Read our new NASA article in Nature:
nature.com/articles/s4158…
Reposted by Raul Cerveira Lima 🇪🇺
Brian Eno: Backwater - from his album, Before And After Science, released on this day in 1977 www.youtube.com/watch?v=Rvci...
Backwater (2004 Digital Remaster)
YouTube video by Brian Eno - Topic
www.youtube.com
December 4, 2025 at 8:50 AM
Brian Eno: Backwater - from his album, Before And After Science, released on this day in 1977 www.youtube.com/watch?v=Rvci...
Reposted by Raul Cerveira Lima 🇪🇺
Reposted by Raul Cerveira Lima 🇪🇺
Borlaff, A.S., Marcum, P.M. & Howell, S.B.
Satellite megaconstellations will threaten space-based astronomy.
Nature 648, 51–57 (2025). doi.org/10.1038/s415...
Satellite megaconstellations will threaten space-based astronomy.
Nature 648, 51–57 (2025). doi.org/10.1038/s415...
Satellite megaconstellations will threaten space-based astronomy - Nature
Rapidly growing satellite constellations pose a substantial threat to astronomical observations, with projections indicating that future space telescopes will have more than 96% of their exposures aff...
doi.org
December 3, 2025 at 6:25 PM
Borlaff, A.S., Marcum, P.M. & Howell, S.B.
Satellite megaconstellations will threaten space-based astronomy.
Nature 648, 51–57 (2025). doi.org/10.1038/s415...
Satellite megaconstellations will threaten space-based astronomy.
Nature 648, 51–57 (2025). doi.org/10.1038/s415...
Um liquidâmbar a ser liquidado por uma luz não âmbar.
Note-se o contraste da coloração outonal entre a metade iluminada e a metade não iluminada.
Valbom, Gondomar, onde predomina a instalação de LED de 4500 K…
#LightPollution #poluiçãoluminosa #contaminaciónluminica #pollutionlumineuse #LEDbranco
Note-se o contraste da coloração outonal entre a metade iluminada e a metade não iluminada.
Valbom, Gondomar, onde predomina a instalação de LED de 4500 K…
#LightPollution #poluiçãoluminosa #contaminaciónluminica #pollutionlumineuse #LEDbranco
November 30, 2025 at 10:50 AM
Um liquidâmbar a ser liquidado por uma luz não âmbar.
Note-se o contraste da coloração outonal entre a metade iluminada e a metade não iluminada.
Valbom, Gondomar, onde predomina a instalação de LED de 4500 K…
#LightPollution #poluiçãoluminosa #contaminaciónluminica #pollutionlumineuse #LEDbranco
Note-se o contraste da coloração outonal entre a metade iluminada e a metade não iluminada.
Valbom, Gondomar, onde predomina a instalação de LED de 4500 K…
#LightPollution #poluiçãoluminosa #contaminaciónluminica #pollutionlumineuse #LEDbranco
Reposted by Raul Cerveira Lima 🇪🇺
CD "Kokyuu", agora também nos canais de streaming, YouTube, etc!
The CD "Kokyuu" is now also available on streaming platforms, YouTube, etc.! www.youtube.com/watch?v=ejek...
The CD "Kokyuu" is now also available on streaming platforms, YouTube, etc.! www.youtube.com/watch?v=ejek...
Ensaio - Luis Tinoco: Kokyuu
YouTube video by Daniela Pinto - Assessoria de Imprensa
www.youtube.com
November 29, 2025 at 2:24 PM
CD "Kokyuu", agora também nos canais de streaming, YouTube, etc!
The CD "Kokyuu" is now also available on streaming platforms, YouTube, etc.! www.youtube.com/watch?v=ejek...
The CD "Kokyuu" is now also available on streaming platforms, YouTube, etc.! www.youtube.com/watch?v=ejek...
Reposted by Raul Cerveira Lima 🇪🇺
Still too little, but pointing in the correct direction: the Restoration of Natural Darkness
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
MOTION 046
iucncongress2025.org
November 25, 2025 at 5:44 PM
Still too little, but pointing in the correct direction: the Restoration of Natural Darkness
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
"The IUCN World Conservation Congress 2025..."
"REQUESTS the Director General to promote the development of a global strategy for the restoration of natural darkness..."
iucncongress2025.org/assembly/mot...
Reposted by Raul Cerveira Lima 🇪🇺
Reposted by Raul Cerveira Lima 🇪🇺
Expérience rigolote à faire avec une enceinte :
youtube.com/shorts/Rl9l2...
youtube.com/shorts/Rl9l2...
Le son s'éteint ! (vidéo n°503)
YouTube video by Julien Bobroff
youtube.com
November 15, 2025 at 8:29 AM
Expérience rigolote à faire avec une enceinte :
youtube.com/shorts/Rl9l2...
youtube.com/shorts/Rl9l2...
Reposted by Raul Cerveira Lima 🇪🇺
Role of Circadian Health in Cardiometabolic Health and Disease Risk: A Scientific Statement From the American Heart Association
"Disruptions to circadian rhythmicity can adversely affect cardiometabolic function and health"
www.ahajournals.org/doi/epub/10....
"Disruptions to circadian rhythmicity can adversely affect cardiometabolic function and health"
www.ahajournals.org/doi/epub/10....
Role of Circadian Health in Cardiometabolic Health and Disease Risk: A Scientific Statement From the American Heart Association
www.ahajournals.org
November 15, 2025 at 4:53 PM
Role of Circadian Health in Cardiometabolic Health and Disease Risk: A Scientific Statement From the American Heart Association
"Disruptions to circadian rhythmicity can adversely affect cardiometabolic function and health"
www.ahajournals.org/doi/epub/10....
"Disruptions to circadian rhythmicity can adversely affect cardiometabolic function and health"
www.ahajournals.org/doi/epub/10....
Reposted by Raul Cerveira Lima 🇪🇺
Reposted by Raul Cerveira Lima 🇪🇺
Lots of folks captioning aurora photos like "for a few minutes we didn't think about politics"
guess I'm built different, every time I'm out trying to see night sky stuff I frequently think about how much light pollution is entirely preventable with just a tiny bit of regulation
guess I'm built different, every time I'm out trying to see night sky stuff I frequently think about how much light pollution is entirely preventable with just a tiny bit of regulation
November 13, 2025 at 10:03 PM
Lots of folks captioning aurora photos like "for a few minutes we didn't think about politics"
guess I'm built different, every time I'm out trying to see night sky stuff I frequently think about how much light pollution is entirely preventable with just a tiny bit of regulation
guess I'm built different, every time I'm out trying to see night sky stuff I frequently think about how much light pollution is entirely preventable with just a tiny bit of regulation
Reposted by Raul Cerveira Lima 🇪🇺
No próximo dia 25 (10h30-12h30) decorre o 4.º webinar do ciclo dedicado ao #astroturismo promovido pelo Turismo de Portugal. Abordarei a problemática da #poluiçãoluminosa e da necessidade urgente de pôr em prática (as) soluções para diminuí-la drasticamente.
www.turismodeportugal.pt/pt/agenda/Pa...
www.turismodeportugal.pt/pt/agenda/Pa...
November 13, 2025 at 11:15 AM
No próximo dia 25 (10h30-12h30) decorre o 4.º webinar do ciclo dedicado ao #astroturismo promovido pelo Turismo de Portugal. Abordarei a problemática da #poluiçãoluminosa e da necessidade urgente de pôr em prática (as) soluções para diminuí-la drasticamente.
www.turismodeportugal.pt/pt/agenda/Pa...
www.turismodeportugal.pt/pt/agenda/Pa...
Reposted by Raul Cerveira Lima 🇪🇺
Brian Eno's album Taking Tiger Mountain (By Strategy) was released on November 14, 1974
November 13, 2025 at 8:08 PM
Brian Eno's album Taking Tiger Mountain (By Strategy) was released on November 14, 1974
No próximo dia 25 (10h30-12h30) decorre o 4.º webinar do ciclo dedicado ao #astroturismo promovido pelo Turismo de Portugal. Abordarei a problemática da #poluiçãoluminosa e da necessidade urgente de pôr em prática (as) soluções para diminuí-la drasticamente.
www.turismodeportugal.pt/pt/agenda/Pa...
www.turismodeportugal.pt/pt/agenda/Pa...
November 13, 2025 at 11:15 AM
No próximo dia 25 (10h30-12h30) decorre o 4.º webinar do ciclo dedicado ao #astroturismo promovido pelo Turismo de Portugal. Abordarei a problemática da #poluiçãoluminosa e da necessidade urgente de pôr em prática (as) soluções para diminuí-la drasticamente.
www.turismodeportugal.pt/pt/agenda/Pa...
www.turismodeportugal.pt/pt/agenda/Pa...
Reposted by Raul Cerveira Lima 🇪🇺
"Our findings show that ALAN disrupts the fundamental energetic constraints on ecosystem metabolism, warranting the inclusion of light pollution in global change and carbon–climate feedback assessments."
Johnston, Kim, & Harris. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...
Johnston, Kim, & Harris. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...
Widespread influence of artificial light at night on ecosystem metabolism - Nature Climate Change
The authors combine light intensity data with eddy covariance observations from 86 sites to show that artificial light at night increases ecosystem respiration and alters carbon exchange, with impacts...
doi.org
November 12, 2025 at 11:21 PM
"Our findings show that ALAN disrupts the fundamental energetic constraints on ecosystem metabolism, warranting the inclusion of light pollution in global change and carbon–climate feedback assessments."
Johnston, Kim, & Harris. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...
Johnston, Kim, & Harris. Nat. Clim. Chang. (2025). doi.org/10.1038/s415...
Reposted by Raul Cerveira Lima 🇪🇺
Worth reading (open access):
"Technical Comparison of Very Low CCT White PC LEDs, PC-Amber LEDs, and White PC LEDs with Blue Filters Secondary Lenses Luminaires to Meet Regulatory Standards on Light Pollution" by Guillermo M. Redrado-Salvatierra et al.
doi.org/10.1080/1550...
"Technical Comparison of Very Low CCT White PC LEDs, PC-Amber LEDs, and White PC LEDs with Blue Filters Secondary Lenses Luminaires to Meet Regulatory Standards on Light Pollution" by Guillermo M. Redrado-Salvatierra et al.
doi.org/10.1080/1550...
Technical Comparison of Very Low CCT White PC LEDs, PC-Amber LEDs, and White PC LEDs with Blue Filters Secondary Lenses Luminaires to Meet Regulatory Standards on Light Pollution
LEDs have become the preferred choice for street lighting design in outdoor locations due to their superior attributes in energy efficiency and long-term durability. In addition, LEDs are also usef...
doi.org
November 12, 2025 at 5:29 PM
Worth reading (open access):
"Technical Comparison of Very Low CCT White PC LEDs, PC-Amber LEDs, and White PC LEDs with Blue Filters Secondary Lenses Luminaires to Meet Regulatory Standards on Light Pollution" by Guillermo M. Redrado-Salvatierra et al.
doi.org/10.1080/1550...
"Technical Comparison of Very Low CCT White PC LEDs, PC-Amber LEDs, and White PC LEDs with Blue Filters Secondary Lenses Luminaires to Meet Regulatory Standards on Light Pollution" by Guillermo M. Redrado-Salvatierra et al.
doi.org/10.1080/1550...
‘Green desert’: the farmers winning a battle with Brazil’s wood-pulp giant
‘Green desert’: the farmers winning a battle with Brazil’s wood-pulp giant
Eucalyptus production is dominated by large multinationals that convert farmland and forest into monoculture plantations
www.theguardian.com
November 6, 2025 at 10:49 AM
Reposted by Raul Cerveira Lima 🇪🇺
Exploração de volfrâmio na Galiza pode contaminar Parque Natural de Montesinho, alerta movimento cívico
Exploração de volfrâmio na Galiza pode contaminar Parque Natural de Montesinho, alerta movimento cívico
expresso.pt
November 1, 2025 at 8:25 AM
Exploração de volfrâmio na Galiza pode contaminar Parque Natural de Montesinho, alerta movimento cívico