"Their role is to utilize their special training to conduct a more comprehensive investigation, employing a variety of techniques in order to establish speed, analyze skid marks and other physical characteristics of the accident scene, " said John Cassidy, executive officer of the Transportation Bureau of the NYPD, at a City Council hearing in February.

CNN: Bicycle injuries: Is the right-of-way fight getting ugly?

Traditional Mexican cuisine is a comprehensive cultural model comprising farming, ritual practices, age-old skills, culinary techniques and ancestral community customs and manners.

UNESCO: Culture

Although developing new diagnostic techniques is cheap compared with developing new drugs (largely because they do not have to undergo such comprehensive and expensive clinical trials), it is frequently not cheap enough to create tests that will be commercially viable if their only market is in the poor world.

ECONOMIST: A poor diagnosis