Do numbers speak? Here are the numbers, and here are explanations of what they are saying. The truths are more important than the myths. Should be obligatory reading. moreless

This Synthesis Report is based on the assessment carried out by the three Working Groups (WGs) of the Intergovernmental Panel on Climate Change (IPCC). It provides an integrated view of climate change as the final part of the IPCC’s Fourth Assessment Report (AR4). Topic 1 summarizes observed changes in climate and their effects on natural and human systems, regardless of their causes, while Topic 2 assesses the causes of the observed changes. Topic 3 presents projections of future climate change and related impacts under different scenarios. Topic 4 discusses adaptation and mitigation options over the next few decades and their interactions with sustainable development. Excellent example of the thinking and methodology, but not the most recent data. moreless

Discusses potential limits of photovoltaic manufacturing due to limitations of various rare minerals. moreless

Critique of Mark Jacobson’s wind, water and sun “solution” for French energy transition. moreless

Dr. Hansen and three other notable climate scientists argue that the CO2 reductions necessary to contain the global temperature rise cannot be achieved with proven technology without a considerable increase in the contribution of nuclear energy. moreless

Trump’s transition team has circulated a 74-point questionnaire at the Department of Energy asking for the names of employees and contractors who have attended climate change policy conferences, and associated emails and documents. This document is being scrutinised in an attempt to predict the new government’s climate policy. These questions could serve as the basis for a purge of EPA employees, and casts doubts on virtually all climate mitigation scenarios. moreless

Quantitative effects of replacing nuclear worldwide. moreless

MIT RESEARCH MISSION Our integrated team of natural and social scientists studies the interactions among human and Earth systems to provide a sound foundation of scientific knowledge to aid decision makers in confronting future food, energy, water, climate, air pollution and other interwoven challenges. Much details on energy alternatives, including costs, safety, and timeliness of availability. moreless

This article presents some crucial findings of the joint research project entitled Storage of electric energy from renewable sources in the natural gas grid-water electrolysis and synthesis of gas components. The challenges of using these technologies on an industrial scale are discussed. moreless

Finally the truth is coming out regarding the possibility of powering the entire US with only wind, sun and water. Jacobson understood that he could capture the populist ideological wing of the climate advocates, but the science caught up. moreless

Electricity generating power plants interact with each other and their customers through the electricity grid as well as the wider natural, economic and social environment. This means that electricity production generates costs beyond the perimeter of the individual plant. moreless

French President Macron’s speech at COP23, which clarified French climate policy. The speech followed the science, unlike previous presidents’ speeches on the subject. It’s an example of lucidity and good sense. moreless

The new report ranks European countries on their climate leadership using official Eurostat data and exclusive data from ElectricityMap.org. moreless

Il est frappant de constater le peu d’impact en près de quinze ans sur le mix énergétique d’une politique volontariste de transition focalisée sur l’électricité et le couple éolien-solaire. Et basée sur de lourds investissements et des subventions massives. Eolien et solaire ne fournissent même pas 5% de la consommation totale d’énergie en 2016. Par contre les dégâts collatéraux sont réels. Les prix de gros du marché de l’électricité s’effondrent et les tarifs des consommateurs s’envolent. moreless

Substantial reduction in carbon intensity drives carbon emissions to peak between 2020 and 2040 across the three scenarios. Still, to reach global climate targets, the world needs an exceptional and enduring effort on top of already pledged commitments, and coordinated global action at unprecedented levels, with meaningful carbon prices. moreless

Graph showing most of the climate-related parameters, including the cumulative CO2 (carbon dioxide) emissions by country. Much useful data. Data source was the World Resources Institute. moreless

Wind and solar power generation have grown dramatically, yet they still generate only a small fraction of electricity or of primary energy. In 2017, for example, wind and solar generated 6.0% and 1.8% respectively of US electricity. Wind and solar, like all energy systems, occupy land, displacing natural systems, agriculture, and human communities. Power density, the energy generation rate per time per unit ground area (expressed here as We m−2), is one important measure of the land use of energy systems. Existing power density estimates for wind and solar are inconsistent. As an example of the implications of these results, consider Germany and its ambitious energy transformation policy. If US wind power density was applicable to Germany, then devoting all German land to wind power would meet about 40% of Germany's total primary energy consumption. moreless