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It will take more time for the change we have to effect, but we don't have more time. The carbon dioxide on Earth, just in the last four years, has increased from .03 percent to .04 percent. And the change will have a significant impact on everyone.
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I like to regard myself as someone who's capable of critical thought, that is to say, who can evaluate claims.
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There is good evidence that Venus once had liquid water and a much thinner atmosphere, similar to Earth billions of years ago. But today the surface of Venus is dry as a bone, hot enough to melt lead, there are clouds of sulfuric acid that reach a hundred miles high and the air is so thick it's like being 900 meters deep in the ocean.
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NASA is an engine of innovation and inspiration as well as the world's premier space exploration agency, and we are well served by politicians working to keep it that way, instead of turning it into a mere jobs program, or worse, cutting its budget.
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I will assert that U.S. economic growth is in lockstep with science and technology and, by extension, science education.
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'The problem is we have this thin atmosphere and a lot of people trying to breathe it. It's this thinness of the atmosphere that has allowed humankind to accidentally change the climate of the planet.
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You stop planetary exploration, those people who do that extraordinary work are going to have to go do something else.
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Science is the key to our future, and if you don't believe in science, then you're holding everybody back.
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I've always loved airplanes and flight. The space program was really important to me as a kid. I still have a photo of Armstrong and Aldrin on the moon in my living room.
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Evolution is the fundamental idea in all of life science - in all of biology.
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As a kid at the World's Fair in 1965, I missed seeing the big global population clock roll over from 2,999,999,999 to 3 billion - I was really disappointed.
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I might be trying to change the world, but I also better be funny while I'm doing it. I've never lost sight of that.
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We want to get young people excited about inventing so they'll be future inventors, and change the world.
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I worked at comedy clubs - if I can use the term 'work' - for several years. I middled at one point. I never made it; I was never a headliner. I never made enough time to write enough good material, in my opinion.
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Everyone, red state, blue state, everyone supports space exploration.
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Everything you can touch and depend on in our society goes back to science.
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I say to the grownups, 'If you want to deny evolution and live in your world that's completely inconsistent with everything we've observed in the universe that's fine. But don't make your kids do it.'
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If the Earth gets hit by an asteroid, it's game over. It's control-alt-delete for civilization.
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If you look back on all the teachers that you liked, I am sure you will find they were very entertaining.
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You don’t need a PhD in climate science to understand what’s going on, that we have overwhelming evidence that the climate is changing. That you cannot tie any one event to that is not the same as doubt about the whole thing.
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Teaching creationism in science class as an alternative to evolution is inappropriate.
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Good science makes a clean environment.
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If we continue to eschew science ... we are not going to move forward. We will not embrace natural laws. We will not make discoveries. We will not invent and innovate and stay ahead.
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To try to really land a spacecraft really on another world is really difficult, and if we lose that ability, it's going to be heartbreaking.