Howard Lee
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hlee.bsky.social
Howard Lee
@hlee.bsky.social
Geologist and Science Writer: If you want to see what climate change can do to the planet just look at Earth's past!
https://h-lee.com/
Reposted by Howard Lee
Mapping tipping risks from Antarctic ice basins under global warming
The model simulations used for the analysis have been carried out using a modified version of the Parallel Ice Sheet Model (PISM; www.pism.io), v1.0. PISM is an open-source, high-resolution, thermomechanically coupled and polythermal ice flow model77,78,96 which is widely adopted in the scientific community for simulating the evolution of ice sheets and glaciers to constrain projections of future sea-level rise. The model version adopted here is the same as in ref. 76. In simulations over the last two glacial cycles, this model configuration has been proven capable of adequately reproducing the dynamic evolution of Antarctica across its glacial–interglacial history, resulting in simulated present-day ice-sheet configurations reasonably close to observations97. PISM is a hybrid shallow ice flow model in which ice flow velocities resulting from two stress balance approximations—the shallow ice and shallow shelf approximations—are superimposed over the entire ice-sheet/ice-shelf domain78. This ensures smooth and consistent transitions between the different flow regimes in the interior of the ice sheet, where flow is dominated by vertical shearing, in the ice streams, which are sliding on the bed and in the floating ice shelves, where flow is characterized by fast plug flow. The simulations are performed using a regular rectangular grid with 16-km...
www.nature.com
February 16, 2026 at 12:09 PM
Reposted by Howard Lee
𝗧𝗵𝗲𝗿𝗲'𝘀 𝘁𝗿𝗮𝗰𝗲𝗿 𝘁𝗲𝘀𝘁𝗶𝗻𝗴 𝗶𝗻 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝗲𝗻𝘃𝗶𝗿𝗼𝗻𝗺𝗲𝗻𝘁𝘀, 𝗮𝗻𝗱 𝘁𝗵𝗲𝗻 𝘁𝗵𝗲𝗿𝗲'𝘀, 𝘄𝗲𝗹𝗹, 𝘁𝗵𝗶𝘀....

Krubera/Voronja Cave, in the Arabika Massif in Georgia, is the deepest known cave in the world.

The karst complex exceeds 2.000 metres in depth, with the deepest explored point reaching 2.199 metres (7.215 feet).
February 16, 2026 at 8:17 AM
Reposted by Howard Lee
Interferogram (#InSAR) shows deformation related to the new Piton de la Fournaise #volcano 🌋 eruption in La Réunion island). ⚒️
🌋 Eruption du 13/02/2026 au Piton de la Fournaise.
Interferogramme Sentinel-1 Ascending Stripmap couvrant la période entre le 08/02/2026 et le 14/02/2026.
🧐 Les franges représentent la zone déformée. Une frange = 2,8 cm de déplacement dans la direction du satellite.
(© OI2/ISDeform – OSUL).
February 16, 2026 at 9:53 AM
Reposted by Howard Lee
Epidote veins

FOV 3 mm

⚒️ #geology
February 16, 2026 at 11:11 AM
Reposted by Howard Lee
Garnet - adularia veins

FOV 3 mm
⚒️ #mineralmonday
February 16, 2026 at 11:26 AM
Reposted by Howard Lee
NEW: Antarctic ice sheet not one tipping element, but interacting basins with distinct thresholds. ~40% of West Antarctic ice may be committed to long-term loss; parts of East Antarctica face risks at 2–3°C. @ricarda-winkelmann.bsky.social @juliusgarbe.github.io
www.pik-potsdam.de/en/news/late...
New study identifies sequence of critical thresholds for Antarctic ice basins
16.02.2026 - The Antarctic ice sheet does not behave as one single tipping element, but as a set of interacting basins with different critical thresholds. This is the finding of a new study by the Pot...
www.pik-potsdam.de
February 16, 2026 at 11:46 AM
⚒️
#ecsmonday

Stress deviations aren't just for major faults! Caldeira et al. (CH) show #sub-seismic fault zones (<10 km) cause #paleostress rotations up to 30° in the Swiss Jura Mountains

doi.org/10.1016/j.jsg.2026.105640

#paleostress #structuralgeology #paperalert
February 16, 2026 at 11:58 AM
"I think it's reversible, but this is authoritarianism."
www.npr.org/2026/02/16/n...
Concerns over autocracy in the U.S. continue to grow
Is America still a democracy? Scholars tell NPR that after the last year under President Trump, the country has slid closer to autocracy or may already be there.
www.npr.org
February 16, 2026 at 11:57 AM
Reposted by Howard Lee
Day 7 of my voyage to the #Antarctic Peninsula on the #tallship #BarkEuropa: an exploration of a narrow channel between Spert and Trinity islands in small boats, weaving between numerous icebergs and growlers.
#BusmansHoliday
February 15, 2026 at 11:08 PM
2 regimes doing similar stuff - front page Saturday NY Times. The Republican Iranification of America continues.
February 15, 2026 at 9:17 PM
Reposted by Howard Lee
medical miracle: this 75 year old man was born yesterday
Schumer on DHS reforms: "I believe Republicans will have no choice but to go along with us because it's so common sense"
February 15, 2026 at 2:51 PM
Reposted by Howard Lee
Let me just make a few little adjustments to that title…

“How a scientist with a PhD in Geology and 25 years of experience is helping lead California’s earthquake work”

Way to devalue my experience.
February 15, 2026 at 3:08 PM
Reposted by Howard Lee
Ask yourself: why would this administration want to delete references to Medgar Evers’ racist assassin being a racist? Why might that be?

I challenge anyone in this administration or Congress to defend this.
Medgar Evers’ killer was a Klansman, but Trump administration says stop calling him a racist - Mississippi Today
Among anticipated changes to a new visitor brochure for the Medgar & Myrlie Evers Home National Monument is no longer using "racist" to describe the killer of the civil rights leader.
mississippitoday.org
February 15, 2026 at 3:14 PM
Reposted by Howard Lee
The first paragraph here only underscores the magnitude of the problem on the Supreme Court.

Any politician who does not recognize this problem and commit to addressing it is unfit to serve in this moment.
this is a really important point. the district courts are trying to contain this administration. the circuits, by and large, are still working, with the occasional exception of the 5th, 8th, and DC circuits.

the Supreme Court is on an island. lawless and completely rogue.
Our court system is largely working, with the exception of the most important court
February 15, 2026 at 1:58 PM
Reposted by Howard Lee
You know I love your ham sandwiches.
February 14, 2026 at 11:35 AM
Reposted by Howard Lee
Thin boudinaged sandstone layer above thicker boudinaged sandstone layer in Catoctin Formation exposed at Rockfish Valley Overlook, Route 250, just below Rockfish Gap. Note the quartz veins in the boudin necks. ⚒️
February 15, 2026 at 1:45 PM
Reposted by Howard Lee
President Trump called U.S. Olympic skier Hunter Hess a "loser" after Hess voiced concern about political turmoil in the U.S. Gold medal U.S. figure skater Amber Glenn says she's faced online hate and threats after advocating for LGBTQ rights.
As US Olympians call for tolerance and LGBTQ rights, some face Trump attacks and online hate
President Trump called U.S. Olympic skier Hunter Hess a "loser" after Hess voiced concern about political turmoil in the U.S. Gold medal U.S. figure skater Amber Glenn says she's faced online hate and threats after advocating for LGBTQ rights.
n.pr
February 15, 2026 at 1:34 PM
Reposted by Howard Lee
Prasad and Makary need to be hauled in front of Congress to answer questions about what happened here.

open.substack.com/pub/thebulwa...
This Is What Destroying the Vaccine Market Looks Like
A shocking move by RFK Jr.’s team has the industry spooked—for good reason.
open.substack.com
February 15, 2026 at 1:32 PM
Reposted by Howard Lee
The Oxford Critical Guide to Homer’s Odyssey is now available electronically.

The print version will be out in the UK in December and in the US in March.

academic.oup.com/book/61677
The Oxford Critical Guide to Homer’s Odyssey
Abstract. The Oxford Critical Guide to Homer’s Odyssey brings together internationally recognized experts to provide commentary-style essays for non-specia
academic.oup.com
November 21, 2025 at 8:57 PM
Reposted by Howard Lee
Arctic sea ice volume is at a record low for the time of year, as it has been for well over a year. The image shows Arctic sea ice volume through February 14, 2026. arctic-news.blogspot.com/2026/02/horr...
February 15, 2026 at 4:46 AM
Reposted by Howard Lee
Kristi Noem: "When it gets to Election Day, we've been proactive to make sure we have the right people voting, electing the right leaders to lead this country."
February 14, 2026 at 2:51 PM
Reposted by Howard Lee
Epibatidine, the frog toxin in the news because of the murder of Navalny, was discovered by this remarkable NIH chemist, John W Daly.
His technique?
“Touching the frog, sampling it on the tongue. If you got a burning sensation, then
this was a frog to collect.”
!!
www.oregonlive.com/history/2021...
John Daly, real-life Indiana Jones and grandson of Portland political firebrand, did it his way, for better and worse
“I’d tell my wife -- joking, kind of -- ‘He says he’s a scientist, but I think he’s CIA,’” Daly's son-in-law says.
www.oregonlive.com
February 15, 2026 at 11:25 AM
Snowball Earth wasn’t fully frozen: ice-free oases sheltered early life ⚒️🧪🌊❄️
theconversation.com/snowball-ear...
Snowball Earth wasn’t fully frozen: ice-free oases sheltered early life
New research reveals that Earth may not have been completely covered in ice.
theconversation.com
February 15, 2026 at 12:45 PM
Reposted by Howard Lee
Colorectal cancer is now the top cancer killer of Americans younger than 50.

The deaths of “Dawson’s Creek” actor James Van Der Beek at 48 this week, and a few years ago “Black Panther” star Chadwick Boseman at 43, highlight the risk for younger adults. on.nbcboston.com/BnJTSAm
Colorectal cancer is rising in younger adults. Here's who is most at risk and symptoms to watch for
While it’s still relatively rare in the under-50 crowd, their colorectal cancer diagnoses have been rising since the early 2000s.
on.nbcboston.com
February 14, 2026 at 8:00 PM