'Ctrl+s' is a keyboard shortcut for saving any file on the computer but our earth is not just any file, it is our life. My mother always told me thaf I should be responsible for the consequences of my actions but these actions are can't be undo or the shortcut 'ctrl+z'. In short there are certain things that can't be undo yet we can still save our earth if we can be responsible for our own actions! We must not let her down or we will all fall down.