Peter S

Petroleum Engineer

[Peter S @PeterNLinBCN]

https://t.co/ebpS3xHkbY

[Garry Kasparov @Kasparov63]

All of it.

[Alvin Foo @alvinfoo]

This is possibly the best example of guerrilla marketing by an airline all year - SAS - Scandinavian Airlines😍

[Teddy - PolyBackTest.com @Bitcoin_Teddy]

Mark Zuckerberg, an outspoken critic of "man-made climate change", shows off his new $300 million, 287-foot mega yacht, powered by four gigantic diesel engines.

Yet another stark reminder that Net Zero is only for the peasants

[Quico Sallés @QuicoSalles]

Mare de Déu Àudio | L’excap del CNP assegura que la fiscalia coneixia l’operació Catalunya. Recordem que el ministeri públic sempre ha rebutjat investigar-ho https://t.co/cD499nGZwv

[Aakash Gupta @aakashgupta]

That water clarity is an engineering decision, and the math behind it is wilder than the video.

Roman aqueducts ran on gravity alone. No pumps, no pressure systems. Engineers carved channels with a gradient so shallow it borders on absurd. The Pont du Gard in southern France drops 2.5 centimeters over 275 meters. That's roughly the thickness of a coin over the length of three football fields. They surveyed that accuracy with plumb lines and wooden leveling instruments.

The clarity you're seeing is a direct product of flow velocity. Too steep and the water erodes the channel walls, picks up sediment, turns brown. Too flat and it stagnates. Roman engineers targeted a slope of about 20 centimeters per kilometer, which kept the water moving fast enough to stay fresh but slow enough to stay clear. Before the water reached the city, it passed through multi-chamber settling tanks where velocity dropped near zero. Suspended particles sank. Clean water flowed out the top into the next chamber. Repeat three or four times.

Pliny specified the minimum slope in writing. Vitruvius published the exact mortar ratio for hydraulic cement: one part lime to two parts volcanic ash for underwater work. The pozzolana from Pozzuoli reacted with water to form a calcium-aluminum-silicate compound that actually gets stronger the longer it sits submerged. Modern concrete degrades in water. Roman concrete bonds with it.

Scale the whole system and it gets harder to process. Eleven aqueducts fed Rome at its peak. Combined output: roughly 1 million cubic meters of water per day. That works out to about 250 gallons per person for a city of one million. Modern New York delivers about 125 gallons per person per day. Ancient Rome had access to double the per capita water supply of the largest city in the United States, running entirely on slope and stone.

The Trevi Fountain in Rome is still fed by one of them. Two thousand years, same source, same gravity, same water.

[Defence Index @Defence_Index]

⚡🇫🇷 France turns Leclerc tank into giant anti drone shotgun in live test

France has adapted its Leclerc main battle tank into a powerful anti drone system, using a modified 120mm shell that disperses over 1,100 tungsten pellets to take down aerial targets.

In a live test in Abu Dhabi, the system successfully destroyed a drone, proving a simple but deadly concept: instead of building a new weapon, upgrade an existing one.

The idea reflects how modern battlefields are rapidly evolving, where even heavy tanks must now counter cheap, fast moving drone threats.

🇫🇷 From tank killer to drone hunter, the battlefield is changing fast.

[Elisa Mosini 🇪🇺🇮🇹 @MosiniElisa]

Polish PM Tusk:
“NATO is disintegrating”

Yes, and the responsibility lies with the US.

They have threatened us over Greenland, imposed tariffs, and insulted Europe and Ukraine.

I’m speaking for myself, but I believe this applies to many European citizens:
I don’t trust the US.

[Fonsi Loaiza @FonsiLoaiza]

Hoy, Alexia Putellas se ha convertido en la segunda máxima goleadora de la historia del FC Barcelona igualando a César Rodríguez y solo por detrás de Leo Messi. Ha marcado un doblete y el Barça femenino ha alcanzado su sexta final consecutiva de Champions. Leyenda del fútbol.

[ToniStrubellTrueta🎗️República Catalana @tonistrubellt]

Com denuncia @OctuvreCAT molt greu que Gemma Nierga ocultés que l'"alumne de Valls" que tan lliurement va despotricar contra la vaga de professors realment fos el CAP de les joventuts del PSOE a Valls! @GemmaNierga #premsagroga

[Rob @robbotrip]

@HustleBitch_

[Trwitta @Trwitta]

Meanwhile:

[Michael McFaul @McFaul]

Agree. Why did Trump threaten Denmark and Canada?

[krls.eth / Carles Puigdemont @KRLS]

La imatge és IA. L'espoli fiscal és real.

[ToniStrubellTrueta🎗️República Catalana @tonistrubellt]

Embarrassment for media promoting Spain's blood-curdling Easter antics when closer inspection shows up SWASTIKA tattoo on Spanish Legionaire's arm upholding religious imagery. Closer to Hitler than God?

[Claude Taylor @TrueFactsStated]

Say what you will but Trump’s approach to secure the Nobel Peace Prize is unorthodox.

[Gandalv @Microinteracti1]

I am not sure the American military establishment has fully grasped what Trump has actually done here. So let me spell it out in language even a Pentagon procurement officer can understand.

Europe has been buying American weapons at a staggering rate. In 2024 alone, US foreign military sales notifications to European countries hit $76 billion. Four times the European average since 2008.  F-35s, missile systems, air defence, ammunition. All of it American. All of it coming with decades of service contracts, maintenance agreements, spare parts, software updates and training programmes worth hundreds of billions more over their operational lifetimes.
Between 2020 and 2024, the United States supplied 64 percent of all European weapons imports. 
That is now over.

Europe has an $860 billion defence plan, and American contractors are being frozen out. The goal is 80 percent of all military purchases from European factories by 2030.  Airbus. Rheinmetall. KNDS. Saab. Leonardo. BAE Systems. They are about to receive the largest order book in the history of European defence industry. Because Trump made it politically impossible for any European government to keep writing cheques to Washington.

Some European governments have discussed worries that the Pentagon could remotely disable American F-35 fighters or impose restrictions on how US weapons can be used.  When your supplier is also threatening to annex your allies, that is not paranoia. That is basic procurement logic.

Trump set out to make America great again. He has succeeded magnificently. For Rheinmetall.

Gandalv / @Microinteracti1

[Vatnik Soup @P_Kallioniemi]

Russian forces are actively using equipment from the American company Ubiquiti to set up communication systems and control drones.

This is active American complicity in war crimes.

[Antiblavers @Antiblavers]

Més patrimoni expoliat: Espasa de la coronació del rei Martí l'Humà, hui al Musée de l'Armée de París.

[Alicia Kearns MP @aliciakearns]

As a British MP I can tell you what “showing up” looks like.

It looks like 457 British soldiers who died in Afghanistan.

NATO has only ever gone to war for one country. Yours.

The question isn’t whether NATO showed up, it’s whether we forgive you for pretending otherwise.