A Catalyst article about homeostasis describing how the process enables birds and mammals to be active on cold days when other species are not.

This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.

Catalyst is...

A Catalyst article discussing how the human body has to handle all sorts of variations, balancing its inputs and outputs, if it is to work efficiently. The article concentrates on one organ, the kidney, and the way it helps to keep things on an even keel through the functions of homeostasis and excretion. What...

This Catalyst article looks at scuba diving, and how having a knowledge of physics is vital in helping divers to get out of dangerous situations. Divers must be trained to control their buoyancy, and to ascend and descend at a safe pace to avoid injury. Other factors explored in the article are the effects of...

A Catalyst article describing how a decaying log is used by many different invertebrates and vertebrates. The damp environment is suitable for many species. This well illustrated article looks at some of them.

This article is from Catalyst: GCSE Science Review 2011, Volume 21, Issue 3.

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Each issue of the Big Picture is on a different topic in biology and comes with its own sprinkling of ‘fast facts’, fascinating snippets of information on the topic. This booklet brings together the best of the fast facts from the last fourteen issues, sorted into eight themes, for use in project work, as part of...

It takes a lot of rare natural resources and energy to make a mobile phone, laptop or computer, the modern technology we use every day. That is why many scientists would like to take inspiration from Mother Nature to help us to make more environmentally-friendly machines in the future.

This Catalyst article...

A Catalyst article looking at how to measure parts of carbon cycling as it happens in forests. Two of the processes used, flux towers and soil chambers, are described.

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

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In this Catalyst article scientists investigate the basis of memory using lab animals; this can lead to insights into human memory, and treatments for people suffering deteriorating memory.

The article focuses on two aspects of memory:

*the hippocampus, the part of the brain belonging to the limbic...

This Catalyst article looks at the topic of human memory. While it is clear that memory is essential in so many ways, there are many myths about how memory works.

This article explores some of these fairytales and explains what modern psychological science has discovered about how memory really works and why...

This article shows how a new understanding of how cells respond to lack of oxygen can help to reduce the tissue damage caused in heart attacks and strokes. The article is from Catalyst: Secondary Science Review 2015, Volume 25, Issue 4.

Catalyst...

A Catalyst article looking at how modern archaeology uses analytical chemical techniques to answer questions about ancient civilisations and animals. Scientists working at the University of Bristol match compounds present in archaeological materials to those in modern plants and animals which were likely to have...

Seagrass meadows are an important environment in the Mediterranean and around Australia. They support diverse wildlife communities and act as carbon stores. This article explains what seagrass is, its value and the human threats to underwater seagrass meadows.

The article is from Catalyst: Secondary Science...

This resource contains a number of articles explaining how statistics help us understand the world.

Investigating fingerprint types

This Catalyst article looks at the work of field ecologists, discussing how ecological studies require the gathering and processing of large amounts of data. This article looks at how ant populations are studied in the field and how their study can produce information about the way living organisms exist in the...

From the Wellcome Trust, this issue of the 'Big Picture' series reviews the causes, health consequences, and personal and social impact of obesity, and how it might be tackled.

How is body weight controlled? Why is...