références en Anglais

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).

An extensive new multi-proxy database of paleo-temperature time series (Temperature 12k) enables a more robust analysis of global mean surface temperature (GMST) and associated uncertainties than was previously available. We applied five different statistical methods to reconstruct the GMST of the past 12,000 years (Holocene). Each method used different approaches to averaging the globally distributed time series and to characterizing various sources of uncertainty, including proxy temperature, chronology and methodological choices. The results were aggregated to generate a multi-method ensemble of plausible GMST and latitudinal-zone temperature reconstructions with a realistic range of uncertainties. The warmest 200-year-long interval took place around 6500 years ago when GMST was 0.7 °C (0.3, 1.8) warmer than the 19th Century (median, 5th, 95th percentiles). Following the Holocene global thermal maximum, GMST cooled at an average rate −0.08 °C per 1000 years (−0.24, −0.05). The multi-method ensembles and th

Temperatures in Iran are hitting record highs, rivers and lakes are drying up, and prolonged droughts are becoming the norm, highlighting a water crisis that is turning much of the country’s territory to dust. The desertification of Iran is occurring at a staggering pace, with officials last month warning that more than 1 million hectares of the country’s territory -- roughly equivalent to the size of Qom Province or Lebanon -- is essentially becoming uninhabitable every year.

Scientists now have a better understanding of the risks ahead and a new early warning signal to watch for.

Dr. Michael E. Mann is Presidential Distinguished Professor in the Department of Earth and Environmental Science at the University of Pennsylvania, with a secondary appointment in the Annenberg School for Communication. He is director of the Penn Center for Science, Sustainability, and the Media (PCSSM). Dr. Mann received his undergraduate degrees in Physics and Applied Math from the University of California at Berkeley, an M.S. degree in Physics from Yale University, and a Ph.D. in Geology & Geophysics from Yale University. His research interests include the study of Earth's climate system and the science, impacts and policy implications of human-caused climate change.

In this sweeping work of science and history, the renowned climate scientist and author of The New Climate War shows us the conditions on Earth that allowed humans not only to exist but thrive, and how they are imperiled if we veer off course.

The renowned US scientist’s new book examines 4bn years of climate history to conclude we are in a ‘fragile moment’ but there is still time to act

Read the latest news headlines and analysis about politics, sports, business, lifestyle and entertainment from award winning Irish and British journalists.

We are a species that is superb at killing, says veteran oceanographer, who calls for us to stop treating fish like crops and give them the respect they deserve

Industry funds ‘grassroots’ resistance to tougher rules while touting green credentials, study shows

The author and eminent climate scientist on the deniers’ new tactics and why positive change feels closer than it has done in 20 years

The scientist who has borne the full brunt of attacks by climate change deniers, including death threats and accusations of misappropriating funds, is set to hit back.

The scientist who has borne the full brunt of attacks by climate change deniers, including death threats and accusations of misappropriating funds, is set to hit back.

Climate scientists are clear that it’s already too late to go back to the kind of weather we used to have, but can we stop things from getting a whole lot worse? Professor Michael E Mann – from Penn State university in the United States – and author of ‘The New Climate War’ explains the radical change needed to avert catastrophic temperature rises.

The growing popularity of SUVs is making it even harder to cut carbon dioxide emissions and meet climate goals. “Policy-makers need to find ways to persuade consumers to choose smaller and more efficient cars,” says Petropoulos.

Emerging ice-sheet modeling suggests once initiated, retreat of the Antarctic Ice Sheet (AIS) can continue for centuries. Unfortunately, the short observational record cannot resolve the tipping points, rate of change, and timescale of responses. Iceberg-rafted debris data from Iceberg Alley identify eight retreat phases after the Last Glacial Maximum that each destabilized the AIS within a decade, contributing to global sea-level rise for centuries to a millennium, which subsequently re-stabilized equally rapidly.

Dangerous climate change has arrived and at this point it’s simply a matter of how bad we’re willing to let it get. But you don’t need to give yourself a guilt trip about it. Save that for the fossil fuel executives.

A group of leading international researchers have issued a stark new warning to governments that relying on technology alone will not be enough to address the growing climate emergency, saying that presumptions that economic growth can continue unchecked should be challenged.

Michael Moore presents Planet of the Humans, a documentary that dares to say what no one else will — that we are losing the battle to stop climate change on planet earth because we are following leaders who have taken us down the wrong road — selling out the green movement to wealthy interests and corporate America. This film is the wake-up call to the reality we are afraid to face: that in the midst of a human-caused extinction event, the environmental movement’s answer is to push for techno-fixes and band-aids. It's too little, too late.

The war of disinformation against climate science is now essentially over. The scientific evidence has become impossible to dispute in light of the dramatic increases in extreme weather events, megafires in recent years. The deniers have not given up the battle, They have merely changed their tactics, Michael Mann contends in his book The New Climate War...