Karanth says tiger numbers can be doubled.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/conflict-price-success-tiger-conservation
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/deccan-herald-bangalore
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/census
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/people-animal-conflicts
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nagarhole-np
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/western-ghats