Soft matter: a physical state you probably don’t know you know

David Quéré, CNRS Research Director and Professor at École Polytechnique (IP Paris), Christophe Josserand, CNRS Researcher at LadHyX* and Professor at the Department of Mechanics at Ecole Polytechnique (IP Paris)

On January 25th, 2023 4 min reading time

From mayonnaise to foam, from mud to concrete, this state surrounds us, and it is often very useful.

3D printing: unexpected ecological benefits for industrials

Mette Præst Knudsen, Professor of Innovation Management at Chair “Technology for Change” (IP Paris) and Head of Research for the Center for Integrative Innovation Management at University of Southern Denmark, Kristina Vaarst Andersen, Associate Professor in Integrative Innovation Management at the University of Southern Denmark, Thierry Rayna, Researcher at the CNRS i³-CRG* laboratory and Professor at École Polytechnique (IP Paris)

On January 25th, 2023 5 min reading time

Originally intended for product development tasks, 3D printing actually has unexpected benefits in terms of sustainability.


Why it's not so easy to calculate global greenhouse gas emissions

Julien Vincent, Head of Mitigation and Adaptation at Citepa, Étienne Mathias, Head of Agriculture, Forestry and Land use at Citepa

On January 25th, 2023 4 min reading time

Splinternet: how geopolitics is fracturing cyberspace

Asma Mhalla, specialist in the geopolitics of the digital economy and lecturer at Sciences Po Paris and École Polytechnique (IP Paris)

On January 17th, 2023 5 min reading time

Cyberspace has become a battleground for power struggles between nations, leading to a fracturing of the global network. It can be used as a weapon of war between countries.

Artificial intelligence: a tool for domination or emancipation?

Lê Nguyên Hoang, Co-founder and President of, Victor Berger, Post-doctoral researcher at CEA Saclay, Giada Pistilli, PhD student at Sorbonne University affiliated with the CNRS Science, Norms, Democracy laboratory

On January 17th, 2023 5 min reading time

Artificial intelligence is not just a field of scientific study or a technological field of application, it has a great deal of power: ethical issues can emerge.


Immense remaining oil reserves and the challenge of reducing consumption

Antoine Le Solleuz, Director of Studies at the École des Mines de Nancy, Olivier Gantois, Executive Chairman of Ufip Energies and Mobilities

On January 17th, 2023 5 min reading time

Environmental DNA: how to track biodiversity “barcodes”

Tania Louis, PhD in biology and Columnist at Polytechnique Insights

On January 10th, 2023 5 min reading time

eDNA makes it possible to study the presence of living beings in the environment without endangering species: it is a population monitoring tool.

CO2 capture to limit climate change: dream or reality?

Didier Dalmazzone, Professor of Chemistry and Processes at ENSTA Paris (IP Paris)

On January 11th, 2023 4 min reading time

Do we have the ability to capture enough CO2 to meet the goals of the Paris Agreement? A few questions and answers to understand where we stand.

Wind turbines: can we make blades recyclable? 

Amandine Volard, Wind and Marine Energy Engineer at ADEME

On January 11th, 2023 4 min reading time

More than 90% of the material used in a wind turbine can already be recycled in France, only the blades pose a problem.

Patricia Crifo

Central banks: the tools to fight climate change

Patricia Crifo, Professor of Economics at École Polytechnique (IP Paris), Researcher at CREST (CNRS) and Associate Researcher at CIRANO

On January 3rd, 2023 4 min reading time

How authoritarian regimes threaten democracies

Dominique Reynié, Professor at Sciences Po and Director General of the Foundation for Political Innovation

On January 3rd, 2023 5 min reading time

Today democracies are in a “perilous situation” and must compete with non-democratic systems

Haptics: why give machines a sense of touch? 

Kostas Danas, CNRS Research Director and Associate Professor at the Solid Mechanics Laboratory (LMS*) at École Polytechnique (IP Paris)

On January 3rd, 2023 4 min reading time

“Haptic sensors” are a new technologie that can measure touch and can be very useful in the biomedical sector and in surgery.


Plasma: a future fuel for satellites 

Pascal Chabert, CNRS Research Director at the Plasma Physics Laboratory (LPP*) and Lecturer at École Polytechnique (IP Paris)

On December 6th, 2022 3 min reading time

Cold plasmas can be used for satellite propulsion. The PEGASES project has identified the ideal gas from which to create the propulsion plasma.

Three ways to reconcile business performance and impact 

Thierry Rayna, Researcher at the CNRS i³-CRG* laboratory and Professor at École Polytechnique (IP Paris), Valentine Georget, Lecturer in Management at Université Côte d'Azur and a researcher at GREDEG (CNRS)

On December 6th, 2022 4 min reading time

Companies are questioning the environmental and social impact of their activities. But the notion of impact, as well as the necessary tools that stem from it, remain vague.


Archaea: why science is so interested in this ancient life form

Roxane Lestini, Professor of Biology at École Polytechnique (IP Paris), Béatrice Clouet-d'Orval, Research Director at Centre de Biologie intégrative de l'Université de Toulouse

On December 6th, 2022 4 min reading time

Poll: 65% of the French think we need to slow down innovation in the face of climate change

Jérôme Fourquet , Director of Opinion Department at Ifop

On November 30th, 2022 6 min reading time

“Science without conscience is but the ruin of the soul” : 84% of French people say that “science has no right to do things that would alter nature too much”.

More columns here
π Planet π Energy

Is a carbon-free aviation industry really possible?

Episode 1 / 6

How can aviation possibly meet climate targets? 

Jérôme Fontane, Lecturer in the Aerodynamics, Energetics and Propulsion Department of ISAE-SUPAERO, Thomas Planès, PhD student at ISAE-SUPAERO

Episode 2 / 6

“We must reduce air travel to meet the Paris Climate Agreement”

Aurélien Bigo, Research Associate of the Energy and Prosperity Chair at Institut Louis Bachelier

Episode 3 / 6

Fly easy with better aerodynamics

Marie Couliou, Research scientist at ONERA and temporary lecturer at the Institut Polytechnique de Paris

Episode 4 / 6

Biofuels, an alternative that is still too expensive

Samuel Saysset, Lead techno advisor at ENGIE Research, Jean-Philippe Héraud, Process engineer at IFP Energies nouvelles, Paul Mannes, director of Total Aviation, in charge of the worldwide business line, Jérôme Bonini, Research and Technology Director, Safran aircraft engines

Episode 5 / 6

Aviation: can hydrogen live up to the hype?

Johnny Deschamps, Professor at the Chemistry and Processes Unit (UCP) at ENSTA Paris (IP Paris), Samuel Saysset, Lead techno advisor at ENGIE Research

Episode 6 / 6

“Pandemic: extra time to reduce CO2 emissions of aviation sector”

Venetia Baden-Powell, Equity research associate at Goldman Sachs

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