Adult males grow a head hump, and males are larger than females.

Nodding disease or nodding syndrome is a recent, little known disease which emerged in Sudan in the 1960s.

The then 64 year old artist was head butted, but escaped serious injury thanks to heavy police protection.

Work on dismantlement involved consideration of the processes associated with dismantling any particular warhead, recognizing that many of these could be specific to the warhead, although some were likely to be generic.

Whether a node is or isn't sufficiently far away from a body, depends on the quotient s d , where s is the width of the region represented by the internal node, and d is the distance between the body and the node s center of mass.