How Many of Us Observed 'Earth Day' Yesterday?

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Friends,

It's now unmistakably clear that this planet can't simply afford to continue its extrvagant and unsustainable ways to the point of borrowing it from our descendants and observance of 'Earth Day' is just a reminder to our duties to protect the earth by switching off lights for an hour. Here I add pixs showing a few world famous landmark places doing so!