Birds as Monitors of Environmental Change looks at how bird populations are affected by pollutants, water quality, and other physical changes and how this scientific knowledge can help in predicting the effects of pollutants and other physical changes in the environment.

Writing at the time of political and social crisis in Athens, Aristophanes was an eloquent yet bawdy challenger to the demagogue and the sophist. The Achanians is a plea for peace set against the background of the long war with Sparta.

Consolation of Philosophy (Latin: Consolatio Philosophiae) is a philosophical work by Boethius, written around the year 524. It has been described as the single most important and influential work in the West on Medieval and early Renaissance Christianity, and is also the last great Western work of the Classical Period. Anicius Manlius Severinus Boëthius, commonly called Boethius (c. 480–524 or 525 AD), was a philosopher of the early 6th century. He was born in Rome to an ancient and prominent family which included emperors Petronius Maximus and Olybrius and many consuls. His father, Flavius Manlius Boethius, was consul in 487 after Odoacer deposed the last Western Roman Emperor. Boethius, of the noble Anicia family, entered public life at a young age and was already a senator by the age of 25. Boethius himself was consul in 510 in the kingdom of the Ostrogoths. In 522 he saw his two sons become consuls. Boethius was imprisoned and eventually executed by King Theodoric the Great, who suspected him of conspiring with the Eastern Roman Empire. While jailed, Boethius composed his Consolation of Philosophy, a philosophical treatise on fortune, death, and other issues. The Consolation became one of the most popular and influential works of the Middle Ages.

In this analysis of one major philosopher by another, Gilles Deleuze identifies three pivotal concepts - duration, memory, and lan vital - that are found throughout Bergson's writings and shows the relevance of Bergson's work to contemporary philosophical debates. He interprets and integrates these themes into a single philosophical program, arguing that Bergson's philosophical intentions are methodological. They are more than a polemic against the limitations of science and common sense, particularly in Bergson's elaboration of the explanatory powers of the notion of duration - thinking in terms of time rather than space.