"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."

"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."

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

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

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

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

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

"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."

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

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

"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."

"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."

"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 find both humor and grimness in most issues."

"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 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."

"By the mid-1990s he had his own television show, 'Bill Nye the Science Guy,' which was shot entirely in Seattle. Nye and his show won several Emmys."

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

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

"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 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."

"Science is the most important thing you can study in school."

"The passion and beauty and joy of science is that we humans have invented a process to understand the universe in a way that is true for everyone. We are finding universal truths."

"I encourage you to look at the world around you and think about how it works. My friends, you can go forth and make this world a better place."

"The invention process is a great exercise for kids. It compels them to define an actual problem, formulate an original solution, develop a product, and share the results or products with their friends and peers."

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

"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."

"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."

"Good science makes a clean environment."

"Everything you can touch and depend on in our society goes back to science."

"His latest television series is called 'Eyes of Nye'" Lately, Nye has focused considerable attention on environmental science."

"We want to get young people excited about inventing so they'll be future inventors, and change the world."

"People say money is not the key to happiness, but I've always figured if you have enough money you can get a key made."

"I hate housework! You make the beds, you do the dishes—and six months later you have to start all over again."

"Don't follow any advice, no matter how good, until you feel as deeply in your spirit as you think in your mind that the counsel is wise."

"You know you are getting old when work is a lot less fun and fun is a lot more work."

"Don't tell your kids you had an easy birth or they won't respect you. For years I used to wake up my daughter and say, 'Melissa, you ripped me to shreds. Now go back to sleep.'"

"I wish I had a twin, so I could know what I'd look like without plastic surgery."

"No one loved life, laughter and a good time more than Joan. We would have dinner and laugh and gossip and I always left the table smiling. She was a brassy, often outrageous and hilarious performer who made millions laugh. In private, she was the picture of elegance and class. I will miss her."

"My best birth control now is just to leave the lights on."

"A man can sleep around, no questions asked, but if a woman makes nineteen or twenty mistakes she's a tramp."

"My obstetrician was so dumb that when I gave birth he forgot to cut the cord. For a year that kid followed me everywhere. It was like having a dog on a leash."

"I succeeded by saying what everyone else is thinking."

"I'm Jewish. I don't work out. If God had wanted us to bend over, he would have put diamonds on the floor."

"Anger is a symptom, a way of cloaking and expressing feelings too awful to experience directly—hurt, bitterness, grief and, most of all, fear."

"Looking fifty is great—if you're sixty."

"I knew I was an unwanted baby when I saw that my bath toys were a toaster and a radio."

"I've had so much plastic surgery, when I die they will donate my body to Tupperware."

"My routines come out of total unhappiness. My audiences are my group therapy."

"Never floss with a stranger."