Reproduction
A collection of Catalyst articles about reproduction.
In Vitro Fertilisation
A Catalyst article about in vitro fertilisation. About one in six couples gets help from specialists because they cannot conceive. One possibility is to use in vitro fertilisation (IVF). ‘In vitro’ means ‘in glass’ and refers to the fact that fertilisation takes place in a laboratory dish or test tube, hence the term ‘test-tube babies’. The article looks at how IVF is carried out.
This article is from Catalyst: GCSE Science Review 2005, Volume 15, Issue 4.
Dr Gillian Lockwood
A Catalyst article about the working life of Dr Gillian Lockwood, a reproductive biologist who specialises in IVF. The article looks at the ethical issues surrounding fertility treatments for problems such as polycystic ovary syndrome.
This article is from Catalyst: GCSE Science Review 2007, Volume 17, Issue 4.
Ignaz Semmelweis: Saviour of Mothers
A Catalyst article about the discovery of puerperal fever by Ignaz Semmelweis a doctor in a maternity ward in Vienna general hospital. The article looks at his observations into death rates and shows how scientists use observations and theories to make practical changes that can improve life.
This article is from Catalyst: GCSE Science Review 2009, Volume 20, Issue 1.
Seven Billion - and Counting
The human population of Earth has reached seven billion. This Catalyst article explores the impact that human activity may have on the planet.
This article is from Catalyst: Secondary Science Review 2012, Volume 22, Issue 3.
What Are Stem Cells? *suitable for home teaching*
This Catalyst article explains the use of stem cells to treat medical problems, and outlines new possibilities for the use of adult stem cells in treatment.
The article is from Catalyst: Secondary Science Review 2012, Volume 23, Issue 2.
The Peacock’s Tale: How Sexual Selection Works
This Catalyst article looks at sexual selection, a form of natural selection, and the role it plays in the evolution of many organisms.
The article is from Catalyst: Secondary Science Review 2014, Volume 24, Issue 4.