What efforts are being made to ensure the sustainability of our green planet in space?

Oh honey, let me tell you, people are cramming like sardines in those Mars-bound rockets, trying to escape this sinking ship of a planet before it's too late. They're planting some measly little crops in space, hoping they'll survive the cosmic rays and space dust. But hey, at this point, they can't mess things up much worse than we have here on good old Earth.