The recently observed acceleration of the expansion of the universe is a topic of intense interest. The favoured causes are the "cosmological constant" or "dark energy". The former, which appears in the Einstein equations as the term [lambda]g[subscript [mu]v], provides an extremely simple, well-defined mechanism for the acceleration. However,…

Describes the programs of the Department of Ecology, Ethology, and Evolution at the University of Illinois (Urbana-Champaign). Focuses on the graduate degrees offered in environmental biology. Lists research interests and courses in plant biology, entomology, forestry, civil engineering, and landscape architecture. (TW)