Lecture

CO2 and Energy Systems

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In course

HUM-123(b): Global issues: energy B

Le cours abordera les grandes problématiques technologiques et socio-économiques liées à la transition énergétique, ainsi que les perspectives et barrières à l'établissement d'un système énergétique durable. ...

Description

This lecture explores the relationship between CO2 emissions and energy systems, discussing the impact of human activities on the environment over millions of years, the carbon cycle, and the potential solutions for a sustainable future. It delves into the concept of learning from nature, the role of solar energy, carbon reservoirs on Earth, and the current carbon cycle dynamics. The lecture also covers the historical context of CO2 research, the greenhouse effect, and the evolution of temperatures. Furthermore, it addresses the urgency of climate change, the cost of climate breakdown, and the potential solutions for reducing CO2 emissions through renewable energy sources and carbon capture technologies.

Instructors (2)

Tuong-Van Nguyen

Teaching & PhD Courses Energy conversion and renewable energy ME-409 This course presents an overview of (i) the current energy system and uses (ii) the main principles of conventional and renewable energy technologies and (iii) the most important parameters that define their efficiency, costs and environmental impacts. The Energy Transition : challenges and opportunities HUM-293 This course explores the energy transition from a system based on fossil fuels to a model based o

Selin Yilmaz

Teaching & PhD Past EPFL PhD Students as codirector Matteo Barsanti Courses The Energy Transition : challenges and opportunities HUM-293 This course explores the energy transition from a system based on fossil fuels to a model based on decarbonised energy sources, sobriety and efficiency, and highlights the main technological, socio-economic and geopolitical issues involved.

Official source

Ontological neighbourhood

Environmental science

Climate: Climate change mitigation

Related concepts (32)

Greenhouse gas emissions

Greenhouse gas emissions (abbreviated as GHG emissions) from human activities strengthen the greenhouse effect, contributing to climate change. Carbon dioxide (), from burning fossil fuels such as coal, oil, and natural gas, is one of the most important factors in causing climate change. The largest emitters are China followed by the US, although the United States has higher emissions per capita. The main producers fueling the emissions globally are large oil and gas companies.

Carbon capture and storage

Carbon capture and storage (CCS) is a process in which a relatively pure stream of carbon dioxide (CO2) from industrial sources is separated, treated and transported to a long-term storage location. For example, the carbon dioxide stream that is to be captured can result from burning fossil fuels or biomass. Usually the CO2 is captured from large point sources, such as a chemical plant or biomass plant, and then stored in an underground geological formation. The aim is to reduce greenhouse gas emissions and thus mitigate climate change.

Climate change

In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to Earth's climate. The current rise in global average temperature is more rapid than previous changes, and is primarily caused by humans burning fossil fuels. Fossil fuel use, deforestation, and some agricultural and industrial practices increase greenhouse gases, notably carbon dioxide and methane.

Greenhouse gas

Greenhouse gases are those gases in the atmosphere that raise the surface temperature of planets such as the Earth. What distinguishes them from other gases is that they absorb the wavelengths of radiation that a planet emits, resulting in the greenhouse effect. The Earth is warmed by sunlight, causing its surface to radiate heat, which is then mostly absorbed by water vapor (), carbon dioxide (), methane (), nitrous oxide (), and ozone (). Without greenhouse gases, the average temperature of Earth's surface would be about , rather than the present average of .

Politics of climate change

The politics of climate change results from different perspectives on how to respond to climate change. Global warming is driven largely by the emissions of greenhouse gases due to human economic activity, especially the burning of fossil fuels, certain industries like cement and steel production, and land use for agriculture and forestry. Since the Industrial Revolution, fossil fuels have provided the main source of energy for economic and technological development.

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