A Catalyst article about predators. The article explores some general principles about predator–prey relationships and looks in some detail at the adaptations shown by a predatory insect being used in the control of an insect pest.

This article is from Catalyst: GCSE Science Review 2005, Volume 16, Issue 1...

A Catalyst article about the human gut and the many microbes it hosts, mainly bacteria. Probiotics are live bacterial ingredients or supplements designed to multiply in the colon and have an impact on health. A prebiotic is a carbohydrate that is not digestible by humans. The article examines the role they play,...

A Catalyst article describing how process chemists work in the pharmaceutical industry, devising methods of making new drugs. Process chemists are a link in the chain from an initial idea to a new drug making it to the market. It generally takes at least 10 years from an idea by a medicinal chemist to a new...

These resources explore proteins by their different function, with examples of how they give structure to living things, carry messages and molecules around our bodies, support the immune system, catalyse chemical reactions, and their use in industry and medicine:

Structure and movement How...

This Catalyst article explores Proxima B, which is an exoplanet orbiting in one of the nearest star systems to the Solar System. It looks at how estimates of its temperature suggest it might be a suitable target for future human. 

This article is from Catalyst: Secondary Science Review 2017, Volume 27, Issue...

This Catalyst article looks at the pterosaurs, which were flying reptiles, and which died out along with the dinosaurs. Analysis of the fossil record has increased scientists' knowledge of these creatures and how they lived. Bird watching during the Mesozoic Era, the expanse of time stretching between 245 and 65...

A Catalyst article explaining what happens when a scientist makes an exciting and new discovery. How do scientists manage to tell as many people as possible, and how can they be sure that someone else has not beaten them to it? Writing and publishing research in scientific journals is a long standing and popular...

This article includes all the code needed to make a simple game which captures keyboard events and uses multimedia. It uses the Pygame library, and includes graphics control and basic collision detection.

The activity is suitable as an introduction to programming with Python, or as a fully working program...

A Catalyst article about Quantum Tunnelling Composite, a material discovered in 1997 and whose resistance decreases dramatically under pressure. How does it work and what uses will it have? The material has been carefully characterised (to understand its composition and how it works), and its first applications...

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A Catalyst article which explores how the nervous system works. Sensitivity, the ability to respond to stimulation, is a product of nervous system activity. How nerve impulses pass around the body, and why these responses are so fast are investigated in the article. Neurones, reflexes, synapses and receptors are...

A Catalyst article explaining how weather forecasts can help keep the public safe in extreme situations by providing advance warnings: for example, airline pilots rely on accurate information about the development of thunderstorms to help them decide which routes might be at risk from lightning or violent...

A Catalyst article about the safe use of radiation. Radioactive materials are hazardous because they give out ionising radiation. Like many scientific discoveries, radioactivity provokes a mixed reaction. Some seek to commercialise it whilst films and comic books emphasise its harmful effects. The article takes the...

A Catalyst article about how decisions taken about controversial issues such as the sitting of a radioactive waste store. How does a government decide where to put such a dump? And how can citizens affect the decision making process? The article examines how governments try to involve their citizens in decision-...