81.   Calling for a new nationalism which would put America first, Buchanan warned that the future challenge to the USA lay in western Europe and the Far East.

82.   A challenge to cycle over, maybe for my next visit!

83.   Waldegrave threw out the challenge to the physics community last week at the annual conference of the Institute of Physics in Brighton.

84.   Nonetheless, the incongruence of rRNA-based phylogenies with molecular trees derived from elongation factors or DNA-dependent RNA polymerases presents a challenge to molecular evolutionists.

85.   With the sole exception of the global communist movement, the Green or environmentalist movement presents the greatest contemporary challenge to the global capitalist system.

86.   It was not possible to construct a satisfactory double blind challenge but he did have a positive open challenge to pure ethanol.

87.   However, we do need to note that they are posing an important challenge to the conventional wisdom on the circumstances of resource misallocation.

88.   This led to further changes in management structures and processes but also represented a significant challenge to professional power to determine priorities.

89.   But the challenges to his monopoly of legitimacy were becoming harder to dismiss.

90.   But anything which seemed to offer a challenge to what they regarded as their rightful status was certain to cause resentment.