Concrete is a mixture of cement, water, sand, gravel, crushed rock, or other aggregates. Sometimes, one or more admixtures are added to change certain characteristics of the concrete, such as workability, durability, and time of hardening.
Top 100 Colleges by Highest Tuition. Here are the top 100 most expensive colleges by tuition for the 2008-2009 school year. The latest numbers can be found in our most expensive colleges ranking. Notes: Some colleges like Bates College, Colby College, Middlebury College, and Union College have a comprehensive fee (tuition + room/board).
School Overviews. Amherst College and Columbia University are the highest-ranked institutions with neuroscience programs. Each school offers a Bachelor of Arts (BA) degree in the field. Columbia University (CU) also has a Bachelor of Science (BS) option. For more detailed information, read on.