| Water abstraction, agricultural runoff, climate change, and pollution from sewage treatment plants have all been blamed. |
| He says we should think more seriously about big natural events such as quakes, tsunamis and climate change. |
| You can expect world leaders to be talking a lot of hot air about climate change today. |
| Global environmental issues like acid rain, ozone depletion, and climate change are relatively recent phenomena. |
| The scientists concerned with this recoloration of our sea say that the apparent alteration is down to climate change. |
| Recent weather phenomena can be explained away as cyclical, or as manifestations of climate change. |
