This article, from Electronics Education, is aimed at giving guidance to teachers and takes an in depth examination of resistance and conduction. It is also linked with an earlier article Essential Ideas in Electronics: Current.

These articles, first published in Electronics Education, are aimed at giving guidance to teachers and help to describe the concept of voltage in an electric circuit. There are two articles in this resource.

The first...

Since the discovery of antibiotics, many people believe that the pathogenic microorganism threat to the population has been removed, with fatal infections and infectious diseases brought under control. This has discouraged research into drugs containing natural compounds such as essential oils. However, humans are...

Four big issues:

• The case for human space flight
• Who owns space?
• Should we really put anything into space?

Genetic selection for screening astronauts and the implications

Published by the Wellcome Trust, the 'Big Picture' explores issues around biology and medicine. Why does Darwinian evolution raise controversy when, say, quantum mechanics scarcely registers on the public consciousness?

A Catalyst article looking at the evidence for evolution and which considers the ongoing conflict between scientists and creationists. The work of Charles Darwin is central to the article which summarises his theory of natural selection and also covers creation myths and creationists.

This article is from...

Produced by the Wellcome Trust, this issue of the Big Picture looks at the physiology and sociology of exercise and movement.

For humans, movement is for more than just basic survival. They move for fun, to compete and to be healthy. This resource looks at the biological systems that keep humans moving and...

A Catalyst article looking at the benefits of exercise and how it affects bone structure and hence physical fitness. Furthermore, obesity in Britain is on the rise and so the population is encouraged to do regular exercise, not only for cardiovascular and respiratory health, but also for general well-being. But...

A Catalyst article about the hunt for an explanation of inheritance. The role of chromosomes was announced in 1903 and the structure of DNA was revealed in 1953, both of which were major scientific breakthroughs in this field of research. This article examines the history of inheritance.

This article is from...

A Catalyst article about careers in geological exploration. The article contains a case study about an exploration geologist and looks at an undergraduate degree course in exploration geology.

This article is from Catalyst: GCSE Science Review 2007, Volume 17, Issue 4.

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