91.   A scientist is warning that yellow fever -- a mosquito-borne disease that is nearly always fatal -- is making a comeback in the Brazilian Amazon region.

92.   Israeli scientists had warned people to expect aftershocks and had told them not to worry.

93.   Scientists have warned that along with rising temperatures, the world will see established weather patterns disturbed and higher frequency of extreme weather.

94.   Scientists had warned of a serious impact on particularly sensitive northern ecosystems because of an expected substantial reduction in the ice expanse.