1.   But the science of carbon sinks is terrifyingly imprecise, scientists warn.

2.   Scientists are warning of a dangerous build-up of chemicals in the water.

3.   Scientists are warning that unless carbon emissions are cut, we could be heading for an environmental catastrophe.

4.   The scientists warn that no one should change their behavior based on these findings.

5.   The scientists warn that this may also apply to the agent which causes BSE.

6.   The scientists warn that the deposits of pyrites are too large to neutralize by liming.

7.   The scientists warn of the potential threat to towns, beaches, golf courses, marinas and nature reserves along the coast.

8.   Despite these improvements, however, the scientists warn that the Baltic continues to be imperiled by the long-term accumulation of toxic chemicals.

9.   Australian scientists have warned that the prevalence of insect-borne diseases could increase as a result of global warming.