World Environment Day is being observed today.This year, the theme of the day is "Land restoration, stopping desertification and building drought resilience".World Environment Day puts a global spotlight on the pressing environmental challenges of our times.Led by the United Nations Environment Programme and held annually on 5th June since 1973, World Environment Day is the largest global platform for environmental public outreach and is celebrated by millions of people across the world.This year, it is hosted by Saudi Arabia.Source: Radio Pakistan