Finding DNA would be a much more direct indicator of life, and there is a chance it is out there. (newscientist.com)
Arguably the most direct indicator of how carefully and consistently government organizations apply rules and handle casework is the incidence of formal complaints and legal challenge. (blog.politics.ox.ac.uk)
An animal's milk is a pretty direct indicator of the level of pollutants she has ingested and so choosing organic dairy products is a surefire way to reduce your own pesticide intake! (goodnessdirect.co.uk)