With the rise of digital technologies the need for effective means of identification has grown enormously. Biometrics is the rapidly growing science of identifying individuals through biological characteristics, from iris patterning to voice recognition. This book introduces biometrics, what it can do today, and future possibilities.

Typography encompasses design for reading, whether in print or on screens, where a set of visual choices to do with font, layout, and print size are taken to enhance a written message. Paul Luna explores the fascinating history of our letters, considering why typographic decisions are taken, and their impact on our own words.

Extinction has occurred throughout the history of life, and nearly all the species that have ever existed have now disappeared. In this Very Short Introduction, Paul B. Wignall looks at the causes and nature of extinction events, what makes a species vulnerable, and the debates in modern science of the role of climate and humans.

Synaethesia is a neurological condition that gives rise to a 'merging of the senses': those with the condition might experience certain numbers as a specific colour, or certain words as a taste. Simner describes synaesthesia's many forms, discusses its links with artistic creativity and lateral thinking, and delves into the underlying neuroscience.

Robin Attfield introduces environmental ethics, exploring the values involved in issues such as pollution, habitat loss, and climate change. Considering the different groups involved in environmental ethics, and the attitudes of the world's religions to environmental stewardship, he calls for action from us all to manage our environment ethically.

Now a vital part of modern economies, the rapid growth of the finance industry in recent decades is largely due to the development of mathematical methods such as the theory of arbitrage. Asset valuation, credit trading, and fund management, now depend on these mathematical tools. Mark Davis explains the theories and their applications.

Reading can inform, inspire, emancipate, and motivate us. Down the centuries, it has brought huge educational and social benefits. It can also unleash subversion, and its spread has been accompanied by censorship and control. Belinda Jack explores the global development and impact of reading - from ancient texts to digital texts today.

Martin Heidegger is one of the twentieth century's greatest yet most enigmatic and divisive philosophers. Michael Inwood explores the major themes of Heidegger's seminal work, Being and Time, as well his later thought and association with Nazism.