Justice & Paix

Fuyant l’acharnement de Donald Trump contre la liberté de la recherche, trois enseignants américains spécialistes du fascisme, Marci Shore, Timothy Snyder et Jason Stanley, se sont expatriés à Toronto, alarmés par la montée de «l’autoritarisme» aux États-Unis.

The Earth had its second-warmest April in NOAA's 176-year period of record. The 10 warmest Aprils on record have occurred since 2010.

Legal residents of the United States sent to foreign prisons without due process. Students detained after voicing their opinions. Federal judges threatened with impeachment for ruling against the administration’s priorities. In the Opinion video above, Marci Shore, Timothy Snyder and Jason Stanley, all professors at Yale and experts in authoritarianism, explain why America is especially vulnerable to a democratic backsliding — and why they are leaving the United States to take up positions at the University of Toronto.

We investigate the probabilities of triggering climate tipping points under five Shared Socioeconomic Pathways (SSPs) and how they are altered by including the additional carbon emissions that could arise from tipping points within the Earth's carbon cycle. The crossing of a climate tipping point at a threshold level of global mean surface temperature (threshold temperature) would commit the affected subsystem of the Earth to abrupt and largely irreversible changes with negative impacts on human well-being. However, it remains unclear which tipping points would be triggered under the different SSPs due to uncertainties in the climate sensitivity to anthropogenic greenhouse gas emissions, the threshold temperatures and timescales of climate tipping points, and the response of tipping points within the Earth's carbon cycle to global warming. We include those uncertainties in our analysis to derive probabilities of triggering for 16 previously identified climate tipping points within the Earth system.

Global risk management for human prosperity

The risk of Planetary Insolvency looms unless we act decisively. Without immediate policy action to change course, catastrophic or extreme impacts are eminently plausible, which could threaten future prosperity.

We are on the brink of an irreversible climate disaster. This is a global emergency beyond any doubt. Much of the very fabric of life on Earth is imperiled. We are stepping into a critical and unpredictable new phase of the climate crisis. For many years, scientists, including a group of more than 15,000, have sounded the alarm about the impending dangers of climate change driven by increasing greenhouse gas emissions and ecosystem change (Ripple et al. 2020).

In Munich I heard both Ukrainians and Alexei Navalny’s widow tell us why Putin must be defeated, says Guardian columnist Timothy Garton Ash

Prudent risk management requires consideration of bad-to-worst-case scenarios. Yet, for climate change, such potential futures are poorly understood. Could anthropogenic climate change result in worldwide societal collapse or even eventual human extinction? At present, this is a dangerously underexplored topic. Yet there are ample reasons to suspect that climate change could result in a global catastrophe...

Dans une tribune au « Monde », trois scientifiques, Denis Couvet, Wolfgang Cramer et Timothy D. Searchinger, alertent sur la politique climatique de l’Union européenne, qui entend consacrer un cinquième des terres cultivées à la bioénergie, et à multiplier les importations de bois.

Why do we always make the same mistake? Oh, that’s only trouble in the Balkans, we say – and then an assassination in Sarajevo sparks the first world war. Oh, Adolf Hitler’s threat to Czechoslovakia is “a quarrel in a faraway country, between people of whom we know nothing” – and then we find ourselves in the second world war. Oh, Joseph Stalin’s takeover of distant Poland after 1945 is none of our business – and soon enough we have the cold war. Now we have done it again, not waking up until it is too late to the full implications of Vladimir Putin’s seizure of Crimea in 2014. And so, on Thursday 24 February 2022, we stand here again, clothed in nothing but the shreds of our lost illusions.

New study shows low levels of future global warming are far less likely than previously thought. Very high warming is also slightly less likely.

The growing threat of abrupt and irreversible climate changes must compel political and economic action on emissions.

La menace croissante de changements climatiques abrupts et irréversibles doit contraindre à une action politique et économique sur les émissions.

Peut-on parler d’écologie sans évoquer la nature ? Peut-on être écolo sans craindre la catastrophe globale ou sans se contenter de petites initiatives déculpabilisantes ? Le philosophe Timothy Morton propose de penser grand avec La pensée écologique.

Several kinds of pressure can lead to the emergence of infectious diseases. In the case of zoonoses emerging from livestock, one of the most significant changes that has taken place since the mid twentieth century is what has been termed the "livestock revolution", whereby the stock of food animals, …