A Catalyst article about Darwin's beetle collection - an early step in his scientific career. Beetle-collecting was something of a craze in the early 19th century; at the same time, scientific understanding of these creatures grew rapidly. The well illustrated article looks at Darwin's work in this field.

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A Catalyst article about how the scanning by an electron microscope of pollen grains shows up their structure, and can help scientists understand why some people suffer from an allergic reaction - hay fever. The article describes how the images were made and how they are used in scientific research.

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This Catalyst article is devoted to brine shrimps. It examines their life cycle and food chain and also provides some advice on how to keep and care for them.

This article is from Catalyst: GCSE Science Review 2003, Volume 13, Issue 4.

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This Catalyst article describes a film which has been made to provide a range of reasons for students to study science. During the film high profile scientists, writers and teachers describe how science provides the technologies which are used in everyday life, how it can protect the environment and how it protects...

A Catalyst article examining the UK’s electricity supplies, twenty per cent of which come from nuclear power stations. Many of these power stations are approaching the end of their working lives. The article looks at the future prospects for nuclear power bearing in mind their safety record and environmental...

This Catalyst article examines malaria which is one of the world’s top ten diseases but an effective vaccine to combat it is yet to be discovered. Scientists in the Malaria Vaccine Group at Oxford are trying to overcome some very difficult problems using a new approach to vaccines.

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A Catalyst article about using the ISIS accelerator to study the structures of materials. ISIS is one of the UK's world leading research centres and this article explains how the centre uses neutrons to study materials at an atomic level. Acting as a super microscope the ISIS accelerator can be used for physics,...

A Catalyst article about the life and ideas of Albert Einstein. He is most famous for his ideas on relativity which formed the theory of general relativity, in which he showed that gravity could be explained as the effect of large masses on space. After the Second World War he also worked with other scientists and...

A Catalyst article about alchemy, the study of eternal life, salvation, and the answer to the ultimate questions about life, the universe and everything. It flourished for more than 1500 years until, in the late 1600s, the beginnings of modern, scientific chemistry edged it aside. The article looks at what was...

A Catalyst article about aluminium, a shiny silvery metal, which is extracted from its ore by electrolysis. Further addition of other metallic elements results in an alloy, which can be cast into various shapes using moulds. The article looks at the processes of extraction, casting, patterns, moulds and finishing...

This Catalyst article describes an experiment with fluoride toothpaste on eggshells (as a substitute for teeth). Both teeth and eggs contain calcium compounds which can be attacked by acid. When an egg is put in vinegar the shell is weakened by the acid making it soft and more fragile. When teeth are exposed to...

A Catalyst article about ice cores from Antarctica which contain air bubbles which record the changing atmosphere. The Antarctic ice sheet is over 3 kilometres thick; ice cores enable scientists to sample each year of snow fall in sequence. This evidence is vital in understanding how the climate is changing. The...

A Catalyst article looking at how research using animals causes heated debate. New drugs must be safety tested on two species of animals, the article looks at how many experiments use animals and how they are regulated, scientific procedures and genetically modified animals.

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This Catalyst article describes how bacterial colonies produce antibiotics and explains how their growth depends on the medium they grow on. Over sixty years ago, a Russian soil scientist called Selman Waksman discovered that soil bacteria belonging to the Streptomyces genus produce some very useful...

A Catalyst article about the role of environmental scientists working for a local authority. Climate change science needs to be applied to everyday life and this article explains how local authorities and their staff are often in the front line applying the science and making it work for public benefit.

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