by Kimberly Brubaker Bradley ; illustrated by Paul Meisel.
February 2009 Vol. 215 No. 2rnApril 2009 Vol. 215 No. 4rnJune 2009 Vol. 215 No. 6rnJuly 2009 Vol. 216 No. 1rnSeptember 2009 Vol. 216 No. 3
A complete look at how human activity impacts on the environment.
Toffler argues that while headlines focus on shifts of power at the global level, equally significant shifts are taking place in our everyday world--supermarkets, hospitals, banks, television, and …
Concepts of work and energy are based on transformation concept that is interpreted as the situation in which an object changes its shape, position and state (rest, motion or aggregation) but it do…