Travis Longcore
@travislongcore.bsky.social
Cities & nature, light pollution, species & landscape conservation, maps & spatial analysis 🌎 Adj. Prof. UCLA Inst. of the Environment and Sustainability
Reposted by Travis Longcore
Read our suggestions for how to kickstart the important transformation of our urban environment to help shield residents from the worst effects of rising temperatures @uclaioes.bsky.social @law.ucla.edu @uclasustainablela.bsky.social @luskininnovation.bsky.social
law.ucla.edu/news/reducin...
law.ucla.edu/news/reducin...
November 24, 2025 at 4:21 PM
Read our suggestions for how to kickstart the important transformation of our urban environment to help shield residents from the worst effects of rising temperatures @uclaioes.bsky.social @law.ucla.edu @uclasustainablela.bsky.social @luskininnovation.bsky.social
law.ucla.edu/news/reducin...
law.ucla.edu/news/reducin...
You don't say. Quality of news outlets shared is lower on conservative social platforms. Bluesky --> more liberal and higher quality news outlets shared. PNAS paper: www.pnas.org/doi/10.1073/... Since you nerds asked, news outlet quality rankings from this paper: academic.oup.com/pnasnexus/ar...
November 19, 2025 at 4:17 AM
You don't say. Quality of news outlets shared is lower on conservative social platforms. Bluesky --> more liberal and higher quality news outlets shared. PNAS paper: www.pnas.org/doi/10.1073/... Since you nerds asked, news outlet quality rankings from this paper: academic.oup.com/pnasnexus/ar...
Looks like a well-conceived and very necessary initiative; count me in!
If you are interested in helping us to mitigate the impacts of light pollution #ALAN on biodiversity, and work on street lighting mitigation and road safety, consider joining our Knowledge Network: www.ncl.ac.uk/press/articl...
Lighting the way to safer, smarter and sustainable roads
A new European research initiative, SAFELUX – The Light We Need, is set to transform how we light our roads at night - improving safety while reducing energy use and environmental impacts.
www.ncl.ac.uk
November 14, 2025 at 9:35 PM
Looks like a well-conceived and very necessary initiative; count me in!
Media picked up our latest extreme heat work and writes better headlines than I do.. www.yahoo.com/news/article... #urbanecology #extremeheat #parks
Researchers make surprising discovery while studying people's behavior at public parks: 'One compelling exception'
They conducted the research using smartphone location data.
www.yahoo.com
November 14, 2025 at 2:56 AM
Media picked up our latest extreme heat work and writes better headlines than I do.. www.yahoo.com/news/article... #urbanecology #extremeheat #parks
Reposted by Travis Longcore
In 2010-2013, conservation teams on #Chichijima - 1 of the main islands in the #Ogasawara chain - captured & removed 131 feral cats. The goal was to reduce predation pressure on an endangered pigeon. The results were immediate: adult pigeon numbers rose from 111 to 966 www.nature.com/articles/s42...
November 3, 2025 at 9:49 PM
In 2010-2013, conservation teams on #Chichijima - 1 of the main islands in the #Ogasawara chain - captured & removed 131 feral cats. The goal was to reduce predation pressure on an endangered pigeon. The results were immediate: adult pigeon numbers rose from 111 to 966 www.nature.com/articles/s42...
Reposted by Travis Longcore
TIL the National Environmental Policy Act is the only thing preventing Donald Trump from dropping nuclear weapons all over the American West.
Good news everyone.
We have the EIS process to come to the rescue here, since I'm not joking, nuclear testing in the 70s and on was required to proceed an Environmental Impact Statement...
www.nrc.gov/docs/ML0331/...
We have the EIS process to come to the rescue here, since I'm not joking, nuclear testing in the 70s and on was required to proceed an Environmental Impact Statement...
www.nrc.gov/docs/ML0331/...
October 30, 2025 at 2:22 AM
TIL the National Environmental Policy Act is the only thing preventing Donald Trump from dropping nuclear weapons all over the American West.
Reposted by Travis Longcore
A look at the devastating power loss across Jamaica following the historic crossing of Hurricane Melissa, captured by NOAA-21.
October 30, 2025 at 6:27 PM
A look at the devastating power loss across Jamaica following the historic crossing of Hurricane Melissa, captured by NOAA-21.
The global biomass of mammals since 1850. On the bright side, a few more whales since the 1980s. www.nature.com/articles/s41...
October 28, 2025 at 11:45 PM
The global biomass of mammals since 1850. On the bright side, a few more whales since the 1980s. www.nature.com/articles/s41...
Healthy forests have native pollinators.
Allowing domestic bees in a national park is akin to letting cattle graze in it. If beekeepers wanted healthy forests they would not introduce a competitor to wild pollinators.
October 28, 2025 at 5:09 PM
Healthy forests have native pollinators.
🔥 New Paper Alert 🔥 -- from the incomparable @ioes.ucla.edu Senior Practicum in Environmental Science with the paper led by new alums Sammy Fruman and Bethany Woo --> anonymized smartphone data show park use in extreme heat 1/ #heat #hazards #mobility #cities www.sciencedirect.com/science/arti...
Smartphone location data show park use patterns in extreme heat (Los Angeles, California, USA)
Climate change, combined with the Urban Heat Island effect, will generate more frequent, intense extreme heat events. These events can induce heat str…
www.sciencedirect.com
September 29, 2025 at 4:48 AM
🔥 New Paper Alert 🔥 -- from the incomparable @ioes.ucla.edu Senior Practicum in Environmental Science with the paper led by new alums Sammy Fruman and Bethany Woo --> anonymized smartphone data show park use in extreme heat 1/ #heat #hazards #mobility #cities www.sciencedirect.com/science/arti...
Remembering a #lightpollution researcher gone too soon.
Four years ago today since Douglas died. We miss him every moment of every day. Loved so much by his family and many friends; a respected scientist and moth-er; a wearer of great shirts; and a Bellowhead superfan.
September 26, 2025 at 8:33 PM
Remembering a #lightpollution researcher gone too soon.
Reposted by Travis Longcore
Justice Sotomayor, not mincing words, also says that today's decision will lead to the "creation of [] a second-class citizenship status" for Latinos, who now will have the burden to "carry enough documentation to prove that they deserve to walk freely."
September 8, 2025 at 4:49 PM
Justice Sotomayor, not mincing words, also says that today's decision will lead to the "creation of [] a second-class citizenship status" for Latinos, who now will have the burden to "carry enough documentation to prove that they deserve to walk freely."
Have a look at what Marko and his team are putting together, taking submissions on: - Biological Effects of Light Pollution - Impacts on Human Health - Urbanization and Light Pollution - Effects on Astronomy and Night Sky Obs - Dark Sky Protection and Policy - Methods for Measuring and Monitoring
I would like to invite you to attend the international ENLIGHT Conference, Novi Sad, Serbia, November 28-30, 2025.
The conference is dedicated to the different aspects of #lightpollution and #alan.
All details are available on the website:
👉 www.enlightproject.rs/enlight-conf...
The conference is dedicated to the different aspects of #lightpollution and #alan.
All details are available on the website:
👉 www.enlightproject.rs/enlight-conf...
ENLIGHT - ENLIGHT Conference
Welcome to the ENLIGHT Conference!
www.enlightproject.rs
September 3, 2025 at 5:45 AM
Have a look at what Marko and his team are putting together, taking submissions on: - Biological Effects of Light Pollution - Impacts on Human Health - Urbanization and Light Pollution - Effects on Astronomy and Night Sky Obs - Dark Sky Protection and Policy - Methods for Measuring and Monitoring
So much interesting new ecological #lightpollution research being published, and I have to highlight this new paper in particular. Shielded lights and lower CCT (warmer colors) reduce flight call disruption of migratory birds in a pretty massive study in NM www.sciencedirect.com/science/arti...
September 3, 2025 at 4:05 AM
So much interesting new ecological #lightpollution research being published, and I have to highlight this new paper in particular. Shielded lights and lower CCT (warmer colors) reduce flight call disruption of migratory birds in a pretty massive study in NM www.sciencedirect.com/science/arti...
Reposted by Travis Longcore
A story of moonlight, eyesight, and life history strategies in electric fish—from our journal "Ecology" (with accompanying photos in our "Bulletin")⬇️
Reminder that fascinating studies about moonlight influences on species behavior are also de facto studies about #lightpollution and especially #skyglow See photos at esajournals.onlinelibrary.wiley.com/doi/full/10.... an article in Ecology at doi.org/10.1002/ecy....
August 14, 2025 at 5:41 PM
A story of moonlight, eyesight, and life history strategies in electric fish—from our journal "Ecology" (with accompanying photos in our "Bulletin")⬇️
Reposted by Travis Longcore
News: Trump’s FCC wants to widen the (already huge) loophole that companies like SpaceX use when they want to launch tens of thousands of satellites while dodging environmental review studies. I’m busy with book revisions, but would happily chat with interested journalist friends. Thoughts below.
August 8, 2025 at 4:19 PM
News: Trump’s FCC wants to widen the (already huge) loophole that companies like SpaceX use when they want to launch tens of thousands of satellites while dodging environmental review studies. I’m busy with book revisions, but would happily chat with interested journalist friends. Thoughts below.
Reposted by Travis Longcore
NEW: Extraordinary footage has emerged of the huge tsunami that hit Russia’s remote Kamchatka peninsula after the 8.8 magnitude earthquake on July 30th.
(🎥 Doni Nikz)
(🎥 Doni Nikz)
August 3, 2025 at 10:43 PM
NEW: Extraordinary footage has emerged of the huge tsunami that hit Russia’s remote Kamchatka peninsula after the 8.8 magnitude earthquake on July 30th.
(🎥 Doni Nikz)
(🎥 Doni Nikz)
Reminder that fascinating studies about moonlight influences on species behavior are also de facto studies about #lightpollution and especially #skyglow See photos at esajournals.onlinelibrary.wiley.com/doi/full/10.... an article in Ecology at doi.org/10.1002/ecy....
August 3, 2025 at 11:56 PM
Reminder that fascinating studies about moonlight influences on species behavior are also de facto studies about #lightpollution and especially #skyglow See photos at esajournals.onlinelibrary.wiley.com/doi/full/10.... an article in Ecology at doi.org/10.1002/ecy....
Reposted by Travis Longcore
🌆🌱 City lights stretch the seasons
New research shows that artificial light at night (ALAN) has a stronger impact than temperature on extending plant growing seasons in cities – especially by delaying the end of the season.
🔗 www.nature.com/articles/s44...
#SciComm 🧪 #LightPollution
New research shows that artificial light at night (ALAN) has a stronger impact than temperature on extending plant growing seasons in cities – especially by delaying the end of the season.
🔗 www.nature.com/articles/s44...
#SciComm 🧪 #LightPollution
Artificial light at night outweighs temperature in lengthening urban growing seasons - Nature Cities
Cities are becoming hotter and brighter. Using satellite data on 428 Northern Hemisphere cities, this study found that artifical night lights outweighed hotter temperatures in lengthening urban growin...
www.nature.com
June 20, 2025 at 8:15 PM
🌆🌱 City lights stretch the seasons
New research shows that artificial light at night (ALAN) has a stronger impact than temperature on extending plant growing seasons in cities – especially by delaying the end of the season.
🔗 www.nature.com/articles/s44...
#SciComm 🧪 #LightPollution
New research shows that artificial light at night (ALAN) has a stronger impact than temperature on extending plant growing seasons in cities – especially by delaying the end of the season.
🔗 www.nature.com/articles/s44...
#SciComm 🧪 #LightPollution
Reposted by Travis Longcore
Artificial light, together with urban heat, may be lengthening the growing season in urban environments by as much as three weeks compared to rural areas, according to an analysis published in Nature Cities. go.nature.com/4e7pQwO #urbanag 🧪
June 17, 2025 at 1:43 PM
Artificial light, together with urban heat, may be lengthening the growing season in urban environments by as much as three weeks compared to rural areas, according to an analysis published in Nature Cities. go.nature.com/4e7pQwO #urbanag 🧪
Important new research on the effects of #lightpollution on #urbanecology
Satellite data indicate that artificial light in urban areas can extend plant growing seasons by up to three weeks compared to rural regions, with the effect most pronounced at the end of the season. doi.org/g9qgz9
Artificial light in big cities is extending the growing season of urban plants, satellite observations show
Artificial light may be lengthening the growing season in urban environments by as much as 3 weeks compared to rural areas, according to an analysis of satellite data from 428 urban centers in the Northern Hemisphere over 7 years, published in Nature Cities.
phys.org
June 16, 2025 at 10:21 PM
Important new research on the effects of #lightpollution on #urbanecology
Reposted by Travis Longcore
Today is World Oceans Day 🌊Our new Nightscape cover story explores how light at night affects our seas & the creatures who live in them. I interviewed the scientists from Plymouth Marine Lab studying and mapping light pollution in our oceans. darksky.org/news/into-th... @darkskyintl.bsky.social
Understanding marine light pollution
Artificial light at night (ALAN) has long been studied for its impacts on humans and wildlife on land…
darksky.org
June 8, 2025 at 5:26 PM
Today is World Oceans Day 🌊Our new Nightscape cover story explores how light at night affects our seas & the creatures who live in them. I interviewed the scientists from Plymouth Marine Lab studying and mapping light pollution in our oceans. darksky.org/news/into-th... @darkskyintl.bsky.social
Reposted by Travis Longcore
tl;dr — this EO co-opts the language of open science to implement a system of political control wherein presidential appointees are given broad latitude to designate any number of reasonable scientific activities and inferences as scientific misconduct, and to penalize those involved accordingly.
Restoring Gold Standard Science
By the authority vested in me as President by the Constitution and the laws of the United States of America, including section 7301 of title 5, United
www.whitehouse.gov
May 24, 2025 at 9:28 PM
tl;dr — this EO co-opts the language of open science to implement a system of political control wherein presidential appointees are given broad latitude to designate any number of reasonable scientific activities and inferences as scientific misconduct, and to penalize those involved accordingly.
Reposted by Travis Longcore
🌊🌈 Sea ice loss changes the colours of life underwater
A new study shows that melting sea ice narrows the range of underwater light, shifting it toward blue. This reshapes the 'light niches' for marine algae – favouring different species and pigments.
🔗 doi.org/10.1038/s414...
🧪 #SciComm
A new study shows that melting sea ice narrows the range of underwater light, shifting it toward blue. This reshapes the 'light niches' for marine algae – favouring different species and pigments.
🔗 doi.org/10.1038/s414...
🧪 #SciComm
Loss of sea ice alters light spectra for aquatic photosynthesis - Nature Communications
This study deduces from first principles how sea ice and seawater shape light spectra in fundamentally different ways. The loss of sea ice may thus trigger changes in both the pigment and species comp...
doi.org
May 6, 2025 at 8:34 PM
🌊🌈 Sea ice loss changes the colours of life underwater
A new study shows that melting sea ice narrows the range of underwater light, shifting it toward blue. This reshapes the 'light niches' for marine algae – favouring different species and pigments.
🔗 doi.org/10.1038/s414...
🧪 #SciComm
A new study shows that melting sea ice narrows the range of underwater light, shifting it toward blue. This reshapes the 'light niches' for marine algae – favouring different species and pigments.
🔗 doi.org/10.1038/s414...
🧪 #SciComm
Reposted by Travis Longcore
Bone chilling.
A court ordered Kilmar Abrego Garcia to stay in the United States.
The Supreme Court ruled 9-0 that he was illegally removed. Trump is pretending he won the ruling 9-0.
1/ You may not think this case means anything to you. But let me tell you why it does.
A court ordered Kilmar Abrego Garcia to stay in the United States.
The Supreme Court ruled 9-0 that he was illegally removed. Trump is pretending he won the ruling 9-0.
1/ You may not think this case means anything to you. But let me tell you why it does.
April 14, 2025 at 9:04 PM
Bone chilling.
A court ordered Kilmar Abrego Garcia to stay in the United States.
The Supreme Court ruled 9-0 that he was illegally removed. Trump is pretending he won the ruling 9-0.
1/ You may not think this case means anything to you. But let me tell you why it does.
A court ordered Kilmar Abrego Garcia to stay in the United States.
The Supreme Court ruled 9-0 that he was illegally removed. Trump is pretending he won the ruling 9-0.
1/ You may not think this case means anything to you. But let me tell you why it does.