1.   Environmental protection Overpopulation in the Majority World has often been blamed for ecological catastrophe.

2.   If they do this, ecological catastrophe is inevitable.

3.   Scientists say that the oil spill is an ecological catastrophe.

4.   Scientists say the oil spill is an ecological catastrophe.

5.   The Black Sea is facing ecological catastrophe as a result of pollution.

6.   The oil spill will be an ecological catastrophe.

7.   Russian scientists are expressing concern that the Black and Azov seas are facing ecological catastrophe as a result of pollution and oil spills.

8.   For a while, this brought higher incomes to herders, but now it is the making of an ecological catastrophe.

9.   It is an ecological catastrophe and it far exceeds the damage to the Coto Donana in Spain by the pollution incident there last spring.

10.   It required a stretch to see any connection between an air-conditioning system in Houston and an ecological catastrophe on the polar extremities.