dahyalal82 (25)in #save • 6 years agosteemCreated with Sketch.Save earthIn June 1972, representatives of the whole world gathered at Stockholm on June to be committed to conserve the…dahyalal82 (25)in #mangal • 6 years agosteemCreated with Sketch.House keeping staff for mars rover goingNASA's 'Opportunity Rover' is facing the biggest problem of its lifetime. The black dust on the Mars planet has hit…