Reciprocity: Competition and cooperation are like nature's yin and yang, claim two French biologists. Today, recent biological and psychological research on reciprocity is based on both biochemistry, game theory, empirical examination of symbiotic relationships and the new sociobiology's theories of group selection.
ENERGY: We already have enough technologies to initiate a full transition to renewable energy sources. According to David Elliott, solar power also has a potential of a staggering 20 terrawatt – more than the world's total energy consumption
NATURE: The attempt to control nature's wildness locally has created uncontrolled effects globally. Do we have to freeze and sweat more in the future, or is civilization far wilder?