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I think that witnessing ecological problems visible from space is one of the new and essential roles of astronauts.

The Earth is a beautiful planet. The space station is a great vantage point to observe it and share our planet in pictures. It makes you more of an environmentalist.

I was really educating myself on the environment, but I didn't realize it was so connected to politics, connected to globalization.

The planet will get better; it's us that won't be here because we'll destroy the environment.

Our challenge for the future is that we realize we are very much a part of the earth's ecosystem, and we must learn to respect and live according to the basic biological laws of nature.

We want to use the environment to shift the way our society works.

I want to interpret the natural world and our links to it. It's driven by the belief of many world-class scientists that we're in the midst of an extinction crisis... This time it's us that's doing it.

Development of space will improve life on Earth. Access to space is important for agriculture, humanitarian efforts, communications, and navigation.

The human brain now holds the key to our future. We have to recall the image of the planet from outer space: a single entity in which air, water, and continents are interconnected. That is our home.

If we continue to address the issue of the environment where we live as though we're the only species that lives here, we'll create a disaster for ourselves.