"In 1992, Nye began doing his own show, 'Bill Nye , the Science Guy,' on PBS. The series' 100 shows produced four Emmys for Nye in eight seasons before he began developing other interests, such as doing short documentaries for the Discovery Channel. His latest production, 'The 100 Greatest Discoveries,' is currently airing on the Science Channel."

"Nye worked for Boeing from 1977 through most of 1980, but left to take a position as a licensed mechanical engineer for the state of Washington."

"Nye, who grew up in Washington, D.C., graduated from Cornell University in 1977 with a degree in mechanical engineering. He was lured to the West Coast by Boeing and made an immediate and significant contribution, designing a hydraulic pressure resonance suppressor for their 747s."

"Nye has won numerous daytime Emmy Awards and has been named outstanding performer in a children's series."

"Nye, a Cornell University graduate with a degree in mechanical engineering, studied under the late astronomer Carl Sagan."

"Gender is determined by your chromosomes."

"Was it appropriate to jail the guys from Enron? ... Was it appropriate to jail people from the cigarette industry who insisted that this addictive product was not addictive, and so on? ... In these cases, for me, as a taxpayer and voter, the introduction of this extreme doubt about climate change is affecting my quality of life as a public citizen. ... That there is a chilling effect on scientists who are in extreme doubt about climate change, I think that is good."

"I went to Monsanto, and I spent a lot of time with the scientists there, and I have revised my outlook, and I'm very excited about telling the world. When you’re in love, you want to tell the world."

"I stand by my assertions that although you can know what happens to any individual species that you modify, you cannot be certain what will happen to the ecosystem. Also, we have a strange situation where we have malnourished fat people. It’s not that we need more food. It’s that we need to manage our food system better. So when corporations seek government funding for genetic modification of food sources, I stroke my chin."

""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."

"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. There is no debate in the scientific community."

"What we want to do is not just less, but do more for less. I want the United States to lead the world in this. The more we mess around with this denial, the more we lose.""

"Look at the facts. We need you to change things, not deny what's happening."

"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."

"Nature is bottom up. It's compelling and complex, and it fills me with joy and it's inconsistent with the top down view."

"Please, you don't want to raise a generation of science students who don't understand how we know our place in the cosmos, who don't understand natural law."

"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."

"I just want to remind us all there are billions of people in the world who are deeply religious, who get enriched by the wonderful sense of community by their religion. But these same people do not embrace the extraordinary view that the Earth is somehow only 6,000 years old."

"How could there be billions of stars more distant than 6,000 years, if the world is only 6,000 years old?"

"We need scientifically literate voters and taxpayers for the future."

"When you have a portion of the population that doesn't believe in (evolution) it holds everybody back, really."

"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.'"

"Evolution is the fundamental idea in all of life science, in all of biology. It's like, it's very much analogous to trying to do geology without believing in tectonic plates. You're just not gonna get the right answer. Your whole world is just gonna be — a mystery. Instead of an exciting place."

"Spacecraft sent to Mars, Saturn, Mercury, the moon, comets, and asteroids have been making incredible discoveries, with more to come from recent launches to Jupiter, the moon, and Mars. The country needs more of these robotic space exploration missions, not less."

"If we found life on Mars, it would change everybody's view of our place in space."

"I will assert that U.S. economic growth is in lockstep with science and technology and, by extension, science education."

"To exclude kids in formal education from science is bad for everybody."

"It is this fragile nature of the earth's atmosphere that I want everybody to appreciate. It's what I call your place in space."

"It's not cool ... or it's not cool enough. The world is getting warmer, that's all there is to it. I want you guys to stop this. I want you to change the world."

"When you compare Mars to Earth, and Venus to Earth, you can see the problem [earthlings face]. We do not want to become Venus."

"If I were the king of the forest, and I’m not, we would have more astronomy."

"People like to grab stuff, hold things in their hands and make things happen. Children’s museums are ideal for these kinds of things. There’s nothing more fun, to me."

"Carbon dioxide has never entered the atmosphere so fast. In 1976 the carbon dioxide level was at 0.03 percent. We've lived through a change to 0.04 percent."

"The more we learn about volcanoes, the more we learn about the earth. Learning about the earth is more important than it has ever been."

"The Earth is just a speck of sand in the universe. And there's no cavalry coming over the hill to rescue it."

"The Earth has never warmed this fast. We need to see how much we can change the world in the next 20 years."

"Half the humans are women, so I think half the scientists should be women - a legacy of my parents."

"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."

"The single biggest impact a person can have on the Earth is driving a car, either driving a fuel-efficient car or just driving it less."

"Change the world - even if ever so slightly - is my goal."

"Global climate change is a big deal to me. We need to change our ways."

"There are major issues that people - as taxpayers and voters - will have to make informed decisions on in the near future. They will need to understand the science and the ethical considerations to form their opinions. Some of these are issues that will affect humanity for decades to come."

"I'm an educator. You do what you have to do to get what you are saying across, and if that means being funny, that's what I do."

"I find both humor and grimness in most issues."

"I don't want people memorizing the planets or counting how many plants there are in the world. But I want them to know that the world is 4.56 billion years old, and I want them to know how we know it is 4.56 billion years old. It's wonderful and exciting, and it creates a reverence for nature. When I see people reject all that, it's kind of creepy."

"I can be educational, but if I'm not funny and entertaining, too, who's going to come and listen to me or watch me on TV."

"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."

"When people, some of them very intellectual, claim that evolution is not true, I get a little nervous."

"When people start rejecting the fundamental understanding of the world that scientific process brings you, well, that's bad in my opinion."

"Without clouds we wouldn't have rain. Without rain there is no water, no crops and no food for you and me. Humans would not exist without the sun, heat, water and oxygen from plants."