New Delhi, March 6 -- The Supreme Court on Wednesday directed the Taj Trapezium Zone authority to appoint the Forest Research Institute to carry out a tree census in the area. A bench of justices Abhay Oka and N Kotiswar Singh said penal provisions against violators couldn't be implemented sans data of existing trees. The TTZ, an area of 10,400 sq km approximately, spreads across Agra, Firozabad, Mathura, Hathras, and Etah districts in UP and Bharatpur district in Rajasthan....