Catalyst Volume 25 Issue 2

This issue of Catalyst contains the following articles:

Crash Investigators

Traffic police use ideas about speed, acceleration and force to determine what happened during road accidents.

Fighting Dengue Fever

Dengue fever is a mosquito-borne disease found in tropical areas. Its range is spreading.

Banana Blues

As bananas age, spots develop on their skins; these contain fluorescent substances which you can observe with a UV torch.

Inside the Teenage Brain

The way our brains change, particularly during adolescence, can be studied using magnetic resonance imaging.

Express Delivery

Cells transfer packets of control hormones from one to another using subcellular packages called exosomes.

Ionic Liquids 

Ionic liquids are a developing area in Chemistry. They are liquids which have the potential to provide greener ways of carrying out chemical processes.

Superman's Not Dead

X-rays are used in security scanning and medical diagnosis. Efforts are always being made to reduce the hazard of working with these electromagnetic rays.

X-rays Then and Now

A series of images shows how X-ray technologies have improved over the last century.

Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.