Free courses
Produced by The Open University, a world leader in open and distance learning, all OpenLearn courses are free to study. We offer nearly 1000 free courses across 9 different subject areas. Our courses are available to start right away.
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Nature & Environment
Eutrophication
Managing eutrophication is a key element in maintaining the earths biodiversity. Eutrophication is a process mostly associated with human activity whereby ecosystems accumulate minerals. This free course, Eutrophication, explains how this process occurs, what its effects on different types of habitat are, and how it might be managed.
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Nature & Environment
Environmental management and organisations
It is believed that environmental management requires action at all levels and by organisations of all types and sizes. However it is not always clear what we mean by environmental management and the role that organisations do and could play. This free course, explores the different interpretations and viewpoints involved by using system ...
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Nature & Environment
Effects of pollutants on the aquatic environment
Effects of pollutants on the aquatic environment is a free course. It begins with an introduction to water and goes on to briefly outline the major sources of water pollution (these being sewage works, manufacturing and industrial plants, the farming and animal husbandry sectors, landfill sites and urban surface water run-off). It considers ...
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Nature & Environment
Climate change
Climate change is a key issue on today's social and political agenda. This free course explores the basic science that underpins climate change and global warming.
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level 1: introductory icon
Nature & Environment
Life in the Palaeozoic
Fossils are a glimpse into the distant past and fascinate young and old alike. This free course, Life in the Palaeozoic, will introduce you to the explosion of evolution that took place during the Palaeozoic era. You will look at the many different types of creatures that existed at that time and how they managed to evolve to exist on land.
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Nature & Environment
Animals at the extremes: the desert environment
Animal life has adapted to survive in the most unlikely and inhospitable habitats. This free course, Animals at the extremes: the desert environment, looks at the surprisingly diverse desert climates throughout the world and mammals, birds, lizards and amphibians that survive there. It splits these animals into three groups according to their ...
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Nature & Environment
Water for life
Atoms, elements and molecules are the building blocks of everything that makes up our world, including ourselves. In this free course, Water for life, you will learn the basic chemistry of how these components work together, starting with a chemical compound we are all very familiar with water.
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Science, Maths & Technology
Migration
Migration is a free course looking at the migrations of animals, with special reference to birds, and also introducing the themes of movement, selection and homeostasis.
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Nature & Environment
Evolutionary tree of mammals
This introduction to the evolution of mammals considers Darwin's observations on mammals and how he noticed that species fell into natural groups. This free course, Evolutionary tree of mammals, looks at evidence from fossils and DNA to examine which mammals are most closely related to whales.
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Nature & Environment
Climate change: transitions to sustainability
Human societies have to take urgent action to end their dependences on fossil fuels. We have to alter the whole path of our development and decision making in order to make our societies both environmentally adaptable and sustainable. This free course, Climate change, takes on the task of trying to chart some of the ways in which it might be ...
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Nature & Environment
‘Land grab’: an environmental issue?
This free course, ‘Land grab’: an environmental issue?, explores how environmental problems are entangled with economic and political issues and offers tools for making sense of the complexity that results. The case of land grab illustrates how everyday issues such as food prices are caught up in connections that link different places, different...
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Nature & Environment
The environmental impact of teaching and learning
This free course, The environmental impact of teaching and learning, discusses the impact on the environment of carbon based teaching and learning in Higher Education Institutions. It introduces a suite of innovative tools and resources which have been designed to help assess and identify ways to reduce these impacts.