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When Was Earth Day launched?
There is an Earth flag.
How many kilometers below the surface is the centre of Earth located?
Which country is the driest place on Earth?
What is the maximum temperature historically recorded on Earth?
And the minimum temperature?
Which country is most committed to the environment (according to the EPI)?
What is the theme of Earth Day 2015?
It's Our Turn to Lead
The Green Generation
A Billion Green Acts
What year was the first international conference on the human environment held?
One of the issues that led to the creation of Earth Day was exploring new planets.