The latest science and cutting-edge digital tools are required to tackle the current environmental crisis for which it is critical to foster global knowledge and technology exchange without any barrier, India said at the UNEA on Friday. Representing India at a special session of the 5th United Nations Environment Assembly (UNEA) to commemorate 50th anniversary of the UN Environment Programme (UNEP), Union Environment Minister Bhupender Yadav said the occasion must serve to strengthen international cooperation to address major environmental challenges. "UNEP's 50th anniversary must serve to strengthen international cooperation and encourage collective action to address the major environmental challenge of our time including climate change, conserving and enhancing biodiversity and tackling pollution and waste while moving on the path of sustainability. The Union minister stressed the need for using the latest science and cutting-edge digital tools and technologies to tackle today's environmental crisis. "For this, fostering global knowledge and technology exchange without barriers is critical," Yadav said at the plenary of the special session.