History 60 Modern dance 31 Nature 28 Effect of human beings on 27 Ballets 23 Choreographers 22 Documentary films 20 Mais ... Dance 18 Environmental aspects 18 Environmental degradation 17 Ballet 16 Social aspects 16 Video recordings for the hearing impaired 15 Dancers 14 Environnement 13 Environmental conditions 11 Environmental health 11 Histoire 11 Homme 10 Human evolution 10 Ballet dancers 9 Dégradation 9 Ecology 9 Fashion 9 Influence sur la nature 9 Economic aspects 8 Environmental policy 8 Human beings 8 Marine animals 8 Ocean 8 menos ...