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As civilization advanced, humans developed tools that allowed us to shield ourselves from the natural cycles that once defined our lives. Fire helped us escape the cold. Irrigation let us shape landscapes around our needs. Walls and weapons kept predators at bay. Over time, these inventions accumulated into infrastructure, then ideology. The more protected we became, the more separated we felt...

Exclusive: Study claims sites previously ranked first can lose 79% of traffic if results appear below Google Overview

Guardian investigation finds almost 7,000 proven cases of cheating – and experts says these are tip of the iceberg

Injecting pollutants into the atmosphere to reflect the sun would be extremely dangerous, but the UK is funding field trials

Injecting pollutants into the atmosphere to reflect the sun would be extremely dangerous, but the UK is funding field trials

Climate change will fuel contests—and maybe wars—for land and resources.

Members reportedly sought access to IT systems at agency that Project 2025 has called ‘harmful to US prosperity’

While some progress has been made in limiting greenhouse gas emissions, we are still on the path for high levels of global warming

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.