It's an important step, since many seed banks face threats from political unrest, natural disasters and other potentially perilous circumstances.

Five hundred Spanish musketeers and six hundred cavalry now found themselves in very perilous circumstances.

"The city is in very perilous circumstances," one Dinkins administration official said, speaking on the condition of anonymity.

Mr Thesiger held his post for three years in circumstances both irksome and perilous.

Flight instantly suggested itself as most eligible in circumstances so perilous.

Society is not sensitive to the fact that old people are not as able to survive under perilous circumstances.

Perhaps this story about refugees, and the courage of children in perilous circumstances they cannot control, is as relevant as ever.

I am telling you that you are exercising poor judgment and creating a perilous circumstance.

You speak like a green girl, Unsifted in such perilous circumstance.

For proof of how a president can prevail even in the most perilous political circumstances, look no further than Bill Clinton.