Scott Lenhart
@slenhart.bsky.social
Husband, father, grandfather. Retired Science Educator, Climate crisis activist and global wildlife conservationist. #ClimateCrisis
Reposted by Scott Lenhart
If we don't rapidly phase out fossil fuels, we can say goodbye to coral reefs, the Greenland and Antarctic icesheets, and permafrost. The results will not be pretty.
3 massive changes you'll see as the climate careens toward tipping points
Scientists are increasingly concerned that the planet is headed for massive, irreversible changes due to global warming. In some cases, those changes have already begun.
www.npr.org
November 19, 2025 at 3:42 PM
If we don't rapidly phase out fossil fuels, we can say goodbye to coral reefs, the Greenland and Antarctic icesheets, and permafrost. The results will not be pretty.
Reposted by Scott Lenhart
PERSPECTIVE: By ignoring climate change as a threat multiplier, MAHA is missing the forest for the trees and will unnecessarily put the lives of millions of children at risk, argue @lisapatel.bsky.social of @docsforclimate.bsky.social and Grace Wickerson of @scientistsorg.bsky.social.
Perspective: On A Sweltering Planet, “Make America Healthy Again” Puts Children’s Health At Risk
The Trump administration is constantly enacting policies that slow clean energy deployment and expand fossil fuel infrastructure. These policies will only make the problem much worse, and a big reason...
www.thexylom.com
November 8, 2025 at 8:04 PM
PERSPECTIVE: By ignoring climate change as a threat multiplier, MAHA is missing the forest for the trees and will unnecessarily put the lives of millions of children at risk, argue @lisapatel.bsky.social of @docsforclimate.bsky.social and Grace Wickerson of @scientistsorg.bsky.social.
Reposted by Scott Lenhart
In the past two years, with surprisingly little notice, renewable energy has suddenly become the obvious, mainstream, cost-efficient choice around the world.
4.6 Billion Years On, the Sun Is Having a Moment
In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.
www.newyorker.com
July 11, 2025 at 6:24 PM
In the past two years, with surprisingly little notice, renewable energy has suddenly become the obvious, mainstream, cost-efficient choice around the world.
Reposted by Scott Lenhart
Reposted by Scott Lenhart
Climate data highlights from this month:
⚠️ Arctic ice extent lowest on record for time of year: bsky.app/profile/zack...
⚠️ New ocean heat content record: bsky.app/profile/zack...
⚠️ Temperatures over land record high (Jan-May): bsky.app/profile/zack...
⚠️ New CO₂ record high: bsky.app/profile/zack...
⚠️ Arctic ice extent lowest on record for time of year: bsky.app/profile/zack...
⚠️ New ocean heat content record: bsky.app/profile/zack...
⚠️ Temperatures over land record high (Jan-May): bsky.app/profile/zack...
⚠️ New CO₂ record high: bsky.app/profile/zack...
🚨 Carbon dioxide (CO₂) levels set a new monthly *record high* in May 2025 - 430.51 ppm (seasonal maximum)
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
This is the second largest May-May increase in this dataset (3.6 ppm higher than 2024). This is not good... 🫣
Data from gml.noaa.gov/ccgg/trends/
June 29, 2025 at 1:17 PM
Climate data highlights from this month:
⚠️ Arctic ice extent lowest on record for time of year: bsky.app/profile/zack...
⚠️ New ocean heat content record: bsky.app/profile/zack...
⚠️ Temperatures over land record high (Jan-May): bsky.app/profile/zack...
⚠️ New CO₂ record high: bsky.app/profile/zack...
⚠️ Arctic ice extent lowest on record for time of year: bsky.app/profile/zack...
⚠️ New ocean heat content record: bsky.app/profile/zack...
⚠️ Temperatures over land record high (Jan-May): bsky.app/profile/zack...
⚠️ New CO₂ record high: bsky.app/profile/zack...
Reposted by Scott Lenhart
A recent review suggests that the more ambitious ceiling of 1.5°C(2.7°F), which nearly every country in the world pledged to work toward under the landmark Paris climate agreement, may be too warm for the planet’s polar ice sheets and trigger massive sea level rise.
Paris goal of 1.5°C warming is still too hot for polar ice sheets, study warns
At the landmark Paris climate agreement, nearly every country in the world pledged to a goal to limit warming to well below 2° Celsius (3.6° Fahrenheit) above preindustrial levels by 2100, and work…
news.mongabay.com
June 20, 2025 at 11:21 AM
A recent review suggests that the more ambitious ceiling of 1.5°C(2.7°F), which nearly every country in the world pledged to work toward under the landmark Paris climate agreement, may be too warm for the planet’s polar ice sheets and trigger massive sea level rise.
Reposted by Scott Lenhart
‼️Take Bold Action for Birds NOW: We’re 400 signatures away from 10,000 calling on Congress to protect migratory birds.
Up to 1 billion birds die each year from preventable causes. The MBTA has protected them for 100+ years — but it’s at risk.
🖊️Act now at this link:
act.abcbirds.org/a/take-actio...
Up to 1 billion birds die each year from preventable causes. The MBTA has protected them for 100+ years — but it’s at risk.
🖊️Act now at this link:
act.abcbirds.org/a/take-actio...
June 16, 2025 at 3:17 PM
‼️Take Bold Action for Birds NOW: We’re 400 signatures away from 10,000 calling on Congress to protect migratory birds.
Up to 1 billion birds die each year from preventable causes. The MBTA has protected them for 100+ years — but it’s at risk.
🖊️Act now at this link:
act.abcbirds.org/a/take-actio...
Up to 1 billion birds die each year from preventable causes. The MBTA has protected them for 100+ years — but it’s at risk.
🖊️Act now at this link:
act.abcbirds.org/a/take-actio...
Reposted by Scott Lenhart
Friday ice update - #Arctic sea ice extent is currently the 6th lowest on record (JAXA data)
• about 120,000 km² below the 2010s mean
• about 700,000 km² below the 2000s mean
• about 1,220,000 km² below the 1990s mean
• about 1,620,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i... ⚒️🧪
• about 120,000 km² below the 2010s mean
• about 700,000 km² below the 2000s mean
• about 1,220,000 km² below the 1990s mean
• about 1,620,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i... ⚒️🧪
June 6, 2025 at 1:09 PM
Friday ice update - #Arctic sea ice extent is currently the 6th lowest on record (JAXA data)
• about 120,000 km² below the 2010s mean
• about 700,000 km² below the 2000s mean
• about 1,220,000 km² below the 1990s mean
• about 1,620,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i... ⚒️🧪
• about 120,000 km² below the 2010s mean
• about 700,000 km² below the 2000s mean
• about 1,220,000 km² below the 1990s mean
• about 1,620,000 km² below the 1980s mean
More: zacklabe.com/arctic-sea-i... ⚒️🧪
Reposted by Scott Lenhart
When warnings of Insectageddon were issued a few years ago, there was widespread denial. Less so now. It's devastating. www.theguardian.com/environment/...
‘Half the tree of life’: ecologists’ horror as nature reserves are emptied of insects
A new point in history has been reached, entomologists say, as climate-led species’ collapse moves up the food chain even in supposedly protected regions free of pesticides
www.theguardian.com
June 3, 2025 at 9:12 AM
When warnings of Insectageddon were issued a few years ago, there was widespread denial. Less so now. It's devastating. www.theguardian.com/environment/...
Reposted by Scott Lenhart
Reposted by Scott Lenhart
Global sea surface temperatures are nearing the 21°C threshold again this year, reaching 20.986°C on February 9. The 21°C threshold was broken for the first time on March 16, 2023.
Before 2023, the previous record high was 20.991°C on March 6, 2016.
How high will SST's go this year? Stay tuned!
Before 2023, the previous record high was 20.991°C on March 6, 2016.
How high will SST's go this year? Stay tuned!
February 10, 2025 at 4:20 PM
Global sea surface temperatures are nearing the 21°C threshold again this year, reaching 20.986°C on February 9. The 21°C threshold was broken for the first time on March 16, 2023.
Before 2023, the previous record high was 20.991°C on March 6, 2016.
How high will SST's go this year? Stay tuned!
Before 2023, the previous record high was 20.991°C on March 6, 2016.
How high will SST's go this year? Stay tuned!
Reposted by Scott Lenhart
The India Meteorological Department (IMD) has now announced that 2024 was the warmest year since 1901 when temperatures started getting recorded.
Warmest year marks race against time
The India Meteorological Department (IMD) has now announced that 2024 was the warmest year since 1901 when temperatures started getting recorded.
www.deccanherald.com
January 7, 2025 at 8:55 AM
The India Meteorological Department (IMD) has now announced that 2024 was the warmest year since 1901 when temperatures started getting recorded.
Reposted by Scott Lenhart
Research explains how foxes hunting mice can plunge down into the snow at high speeds without injuring their poor little snouts.
How a fox skull shape conquers the snow
Research explains how foxes hunting mice can plunge down into the snow at high speeds without injuring their poor little snouts.
www.npr.org
December 27, 2024 at 7:29 PM
Research explains how foxes hunting mice can plunge down into the snow at high speeds without injuring their poor little snouts.
Reposted by Scott Lenhart
📚BANNING BOOK BANS
New Jersey Democratic Gov. Phil Murphy recently signed the Freedom to Read Act — a law prohibiting public and school libraries from banning books in the state and to enshrine protections against civil and criminal charges for librarians who comply with the law. (Illinois,…
New Jersey Democratic Gov. Phil Murphy recently signed the Freedom to Read Act — a law prohibiting public and school libraries from banning books in the state and to enshrine protections against civil and criminal charges for librarians who comply with the law. (Illinois,…
December 25, 2024 at 10:30 PM
📚BANNING BOOK BANS
New Jersey Democratic Gov. Phil Murphy recently signed the Freedom to Read Act — a law prohibiting public and school libraries from banning books in the state and to enshrine protections against civil and criminal charges for librarians who comply with the law. (Illinois,…
New Jersey Democratic Gov. Phil Murphy recently signed the Freedom to Read Act — a law prohibiting public and school libraries from banning books in the state and to enshrine protections against civil and criminal charges for librarians who comply with the law. (Illinois,…
Reposted by Scott Lenhart
Reposted by Scott Lenhart
In a first for the US, solar and wind generated more electricity than coal over most of 2024. www.canarymedia.com/articles/cle... h/t @sejorg.bsky.social
Chart: Wind and solar overtook coal on the US grid in 2024
The renewable energy sources together generated more electricity than coal-fired power plants from January to November of this year.
www.canarymedia.com
December 23, 2024 at 3:13 PM
In a first for the US, solar and wind generated more electricity than coal over most of 2024. www.canarymedia.com/articles/cle... h/t @sejorg.bsky.social
Reposted by Scott Lenhart
Guess which ‘one’ hasn’t figured it out yet?! 👇
Just one guess. 🇺🇸
Just one guess. 🇺🇸
December 18, 2024 at 10:27 AM
Guess which ‘one’ hasn’t figured it out yet?! 👇
Just one guess. 🇺🇸
Just one guess. 🇺🇸
Reposted by Scott Lenhart
The most encouraging climate solutions and green technologies of 2024 #ClimateAction #netzero #Renewables #ClimateSolutions www.newscientist.com/article/2459...
The most encouraging climate solutions and green technologies of 2024
Renewable energy continued to grow in 2024, and there were other hopeful developments in technologies aiming to reverse the rise in greenhouse gas emissions
www.newscientist.com
December 18, 2024 at 1:16 PM
The most encouraging climate solutions and green technologies of 2024 #ClimateAction #netzero #Renewables #ClimateSolutions www.newscientist.com/article/2459...
Reposted by Scott Lenhart
Atlantic circulation collapse? "In short, it’s a climate scientist’s nightmare come true."
Here's a good 'deep dive' into this risk, from Yale Climate Connections.
yaleclimateconnections.org/2024/12/atla...
Here's a good 'deep dive' into this risk, from Yale Climate Connections.
yaleclimateconnections.org/2024/12/atla...
Atlantic circulation collapse? New clues on the fate of a crucial conveyor belt » Yale Climate Connections
The Atlantic Meridional Overturning Circulation, which includes the Gulf Stream, is vital to Earth's climate. Its weakening could spell disaster.
yaleclimateconnections.org
December 12, 2024 at 9:54 AM
Atlantic circulation collapse? "In short, it’s a climate scientist’s nightmare come true."
Here's a good 'deep dive' into this risk, from Yale Climate Connections.
yaleclimateconnections.org/2024/12/atla...
Here's a good 'deep dive' into this risk, from Yale Climate Connections.
yaleclimateconnections.org/2024/12/atla...
Reposted by Scott Lenhart
A rapidly changing planet means our watersheds are changing too — thanks to land use, water diversions, and climate change.
Wild #river news—a global survey looking at 3 million rivers over the past 35 years shows the annual flow of water dropped in 44% of the world’s largest downstream rivers while many headwater streams grew. The impact on everything from sediment to irrigation are vast
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
More flow upstream and less flow downstream: The changing form and function of global rivers
We mapped daily streamflow from 1984 to 2018 in approximately 2.9 million rivers to assess recent changes to global river systems. We found that river outlets were dominated by significant decreases i...
www.science.org
December 14, 2024 at 9:46 PM
A rapidly changing planet means our watersheds are changing too — thanks to land use, water diversions, and climate change.
Reposted by Scott Lenhart
Important new update on ongoing greening of the Arctic tundra associated with rapid polar climate warming. #UVA Prof. Howie Epstein is one of the report's co-authors.
#Arctic #NOAA #climate
arctic.noaa.gov/report-card/...
#Arctic #NOAA #climate
arctic.noaa.gov/report-card/...
Tundra Greenness - NOAA Arctic
DOI: 10.25923/5t2g-fm41 G. V. Frost1, M. J. Macander1, U. S. Bhatt2, L. T. Berner3, J. J. Assmann4, H. E. Epstein5, B. C. Forbes6, S. J. Goetz3, S. R. Karlsen7, M. J. Lara8,9, E. López-Blanco10, R. Í....
arctic.noaa.gov
December 11, 2024 at 4:28 PM
Important new update on ongoing greening of the Arctic tundra associated with rapid polar climate warming. #UVA Prof. Howie Epstein is one of the report's co-authors.
#Arctic #NOAA #climate
arctic.noaa.gov/report-card/...
#Arctic #NOAA #climate
arctic.noaa.gov/report-card/...
Reposted by Scott Lenhart
Breaking news!
Code UFB!!!
On December 10, Arctic sea-ice extent hit a new modern daily low, beating the previous record daily low set in 2016 by over 155,000 square kilometers.
No ice for you!
Code UFB!!!
On December 10, Arctic sea-ice extent hit a new modern daily low, beating the previous record daily low set in 2016 by over 155,000 square kilometers.
No ice for you!
December 11, 2024 at 1:00 PM
Breaking news!
Code UFB!!!
On December 10, Arctic sea-ice extent hit a new modern daily low, beating the previous record daily low set in 2016 by over 155,000 square kilometers.
No ice for you!
Code UFB!!!
On December 10, Arctic sea-ice extent hit a new modern daily low, beating the previous record daily low set in 2016 by over 155,000 square kilometers.
No ice for you!
The British government announced that Qatar will be investing $1.3 billion in climate technology in the United Kingdom. The investment is expected to create thousands of jobs and launch climate technology hubs in both countries to accelerate the development of climate-friendly technologies.
December 10, 2024 at 4:14 PM
The British government announced that Qatar will be investing $1.3 billion in climate technology in the United Kingdom. The investment is expected to create thousands of jobs and launch climate technology hubs in both countries to accelerate the development of climate-friendly technologies.