Floating hundreds of miles above Earth, astronauts have an unparalleled and beautiful view of the planet.
But that view also lets them look down on the devastating effects of climate change, wildfires, war, pollution, and other troubling human-caused activity.
The collection of pleas is not only inspiring, but also sobering: If we don’t clean up our act, and fast, we could irreversibly destroy the only home we’ve got.
Here are the some of the most salient quotes from the video.
It's amazing how fragile the atmosphere looks from space, said American astronaut Mary Cleave. All we have is a thin film of air to protect us.
'When you look at your planet from space, it's beautiful, fragile, and there's this little thin layer all the way around: our atmosphere. And that's the only thing that protects us from the really bad vacuum in outer space. This little fragile layer, the atmosphere, is part of our life support system. We need to be really careful with it.' -- Mary Cleave
'Less than 550 humans have orbited the Earth. Those of us lucky enough to have done so more than once have not only heard about the negative impact that the industrial age has had on our planet, we've seen it with our own eyes.' -- Michael López-Alegría, American astronaut
'The view from space is just breathtaking. And at the same time we recognise deforestation and wildfires, and so on, which are related to climate change.' -- Naoko Yamazaki, Japanese astronaut
'We astronauts have been witnessing the continued shrinking of the Aral Sea, the burning rain forests along the Amazon and in Indonesia, the polluted air over industrial zones, and the dirty water at the river deltas.' -- Ernst Messerschmid, German astronaut
We're the only caretakers of Earth, the astronauts say, so it's our job to watch over of the planet.
Dutch astronaut Wubbo Ockels suggested that the Earth has cancer, just like him, in a heartbreaking message.
'Suppose I can transfer the experience which I have to you. Then you would go out and see the Earth. And when you have let's say the spirit and the insight and the attitude of an astronaut, you start to love the Earth. And if you really love something, you don't want to lose it. Our Earth has cancer. I have cancer, too.' -- Wubbo Ockels
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