Sciences

Economie circulaire, sciences et science fiction, en direct des Utopiales 2022.

/ En Français, Sustainable development / Leave a Comment

Le week-end dernier avait lieu à Nantes le rendez-vous incontournable des passionnés de sciences et des férus de science-fiction : les Utopiales. Cette édition 2022 était particulièrement marquée par les thématiques des nombreuses limites et transitions auxquelles nos sociétés font face. La dernière conférence à laquelle j’ai assisté dimanche était particulièrement fascinante : « Remplaçons la ligne […]

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Stunner : carbon dioxide role known as early as 1932

/ Climate change, Sciences / Leave a Comment

While vested interests are still denying the warming role in our atmosphere of carbon dioxide, TreeHugger has unearthed a study from early as 1932 showing that this gas is actually warming our Planet. This was 81 years ago ! I had heard or rather read that this was known from at least since the 1980s

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Graphene could bring solar PV efficiency to 60%

/ Cleantech, Energy / Leave a Comment

According to TreeHugger, graphene could offer 60% solar cell efficiency if it were to replace silicon in PV panels. As they note : ” Researchers from the Institute of Photonic Sciences in Spain have just published results from their experiments.” ” While their results so far will probably be more useful to make better image

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A 1.5°C temperature rise could be game over for our civilization

/ Climate change / 2 Comments

Oooops ! According to Cleantechies, a 1.5°C temperature rise ” could unleash more than 1,000 gigatons of carbon and methane currently trapped beneath Siberian permafrost and accelerate global climate change. “ 1.5°C is considered as the low level of potential climate warming to date. This is even more worrying as such quantities of greenhouse gases

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WHO : diesel exhausts cause lung cancer

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According to the World Health Organization : ” the WHO  today classified  diesel  engine  exhaust  as carcinogenic  to  humans,  based  on  sufficient  evidence that exposure is associated with an increased risk for lung cancer.“ This is a bad news for me as I recently changed for a diesel car and I am amazed at how

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Global warming close to becoming irreversible

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To Reuters : ” The world is close to reaching tipping points that will make it irreversibly hotter, making this decade critical in efforts to contain global warming, scientists warned on Monday. (…) As emissions grow, scientists say the world is close to reaching thresholds beyond which the effects on the global climate will be

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