Flux continu

Climate scientists have told the Guardian they expect catastrophic levels of global heating. Here’s what that would mean for the planet

EUCityCalc has officially launched its free, open source online platform that allows local councils and other stakeholders to visualise and simulate low-carbon scenarios for their towns and cities, as well as to assess the trade-offs related to available choices.

De recente verwoestende overstromingen in Peking hebben het Chinese “Sponge Cities Project” danig op de proef gesteld. Hoewel de hoofdstad onder het project extreme regenval zou moeten aankunnen, lieten tientallen mensen het leven en moest een gloednieuwe “sponsluchthaven” sluiten.

Heat and cold are now established health risk factors, with several studies reporting important mortality effects in populations around the world.1, 2, 3 The associated health burden is expected to increase with climate change, especially under the most extreme scenarios of global warming.4, 5 However, robust estimates of excess mortality in the current and future periods are still challenging to obtain due to the numerous factors influencing vulnerability to heat and cold, including climatic, environmental, and socioeconomic conditions.6 These factors represent the main drivers of variation in mortality risks, which have been shown to differ geographically and across age groups.

Meer dan de helft van burgemeesters van grote Europese steden geeft klimaatactie de allerhoogste prioriteit. Dat blijkt uit de resultaten van de Eurocities Pulse-enquête waarin 92 burgemeesters uit 28 landen in Europa werden bevraagd.

The problem with American electric vehicles is the same problem as with our gas-powered models: They’re too dang big. The Ford F-150 has been the top-selling automobile in the country for many years, and the electric version — while admittedly quite nifty — weighs 3.25 tons. The new electric Hummer is even more ridiculous, coming in at 9,000 pounds, with a 212-kilowatt-hour battery that weighs more than a Mazda Miata.

Dans cet épisode, nous allons essayer de nous focaliser sur deux crises actuelles, la crise sociétale et la crise environnementale. Nous sommes fin mars, d’un côté la synthèse du dernier rapport du GIEC vient de sortir tirant pour une dernière fois la sonnette d’alarme. D’un autre côté, les grèves qui réclament de meilleures conditions de travail et de retraite. Jusqu’à présent ces deux enjeux étaient bien distincts. Les bobos citadin.e.s d’un côté, des travailleurs et travailleuses de métiers pénibles et essentiels de l’autre. Mais est-ce qu’en réalité la fin du monde et la fin du mois sont le même combat ? Je vous propose d’explorer cette question via le prisme de la décroissance. Un concept qui peut paraître polarisant mais qui pourrait également devenir un concept de société fédérateur.

Community displacement has emerged as an unintended cost of climate resilience efforts. Here’s how cities can boost both livability and equity.

Een voormalige stortplaats in Bulawayo maakte plaats voor een moestuin met aquacultuur en bracht zo inspiratie voor de bredere gemeenschap. Het is een voorbeeld van een geslaagd Green Cities-project waarmee de FAO de levenskwaliteit in kwetsbare steden wil verbeteren en stadslandbouw stimuleren.

Previous studies show that city metrics having to do with growth, productivity and overall energy consumption scale superlinearly, attributing this to the social nature of cities. Superlinear scaling results in crises called ‘singularities’, where population and energy demand tend to infinity in a finite amount of time, which must be avoided by ever more frequent ‘resets’ or innovations that postpone the system's collapse. Here, we place the emergence of cities and planetary civilizations in the context of major evolutionary transitions. With this perspective, we hypothesize that once a planetary civilization transitions into a state that can be described as one virtually connected global city, it will face an ‘asymptotic burnout’, an ultimate crisis where the singularity-interval time scale becomes smaller than the time scale of innovation. If a civilization develops the capability to understand its own trajectory, it will have a window of time to affect a fundamental change to prioritize long-term homeosta