During the past 50 years we have consumed at least half of the world’s non-renewable energy resources and have destroyed over 50% of the world’s forests.
Katika kipindi cha miaka hamsini (50) iliyopita tumemaliza asilimia hamsini ya vyanzo vya nishati na tumeangamiza asilimia hamsini (50) ya misitu ya dunia nzima.