21.   With an eye on the forecast, however, officials warned that freezing overnight would create serious driving hazards Sunday.

22.   Other Ukrainian scientists and leaders have played down concerns of a new blast, but few argue that the fuel poses a serious environmental hazard.

23.   Department of Conservation Whakapapa field center manager Mark Davies said monitoring indicated there was no serious hazard to those on the mountain.

24.   Gateway has received three reports about pieces of the foam tearing away, posing a serious choking hazard to young children, the commission said.

25.   Morales said his office is taking the stand that a driverless tractor constitutes a serious hazard to workers.

26.   Not surprisingly, inflation is a serious political hazard.