earth sustainability climate change

abstract air annihilation at balance balancing breaking capacity change climate collapse concept crash crisis dead debt decay decline declining default degradation depleting depletion destroy destruction down downfall drain drops dying earth ecological ecology economic economy ecosystem environment environmental extinction global going hope hopeless human humanity humankind issue issues life limit limitation limits living mankind market mass maximum natural nature of our ours out over overpopulate overpopulation planet point pollution population practices race resources ruin running scarcity science shortage sustainability the time unsustainable war warming wars waste water world