The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
— Carl Sagan
Impressive Carbon quotations
We define organic chemistry as the chemistry of carbon compounds.
Carbon dioxide is portrayed as harmful.
But there isn't even one study that can be produced that shows that carbon dioxide is a harmful gas.
Too many cars, too many factories, too much detergent, too much pesticides, multiplying contrails, inadequate sewage treatment plants, too little water, too much carbon dioxide - all can be traced easily to too many people.
I think it's important that people think about what they are doing and that includes what they are eating. I am 61 now and attitudes towards drinking and driving have changed radically since I was a student. People change their notion of what is responsible. They will increasingly ask about the carbon content of their food.
When you have energy companies like Shell and British Petroleum, both of which are perhaps represented in this room, saying there is a problem with excess carbon dioxide emission, I think we ought to listen.
Carbon dioxide does not cause or contribute to smog, and the Kyoto treaty would do nothing to reduce or prevent smog.
Our climate is changing. The Earth's climate has, in fact, warmed by 1.1 to 1.6 degrees Fahrenheit since the industrial revolution. People look at this and say: Oh, that is not very much. In fact, it is very much, and it changes the dynamic. It impacts species. It kills some. It diminishes the carbon sink of the ocean. It does a number of things.
Once the renewable infrastructure is built, the fuel is free forever.
Unlike carbon-based fuels, the wind and the sun and the earth itself provide fuel that is free, in amounts that are effectively limitless.
I also think that if you want to put a price on carbon, why not just do it with a simple tax? Why not ask motorists to pay more, why not ask electricity consumers to pay more and then at the end of the year you can take your invoices to the tax office and get a rebate of the carbon tax you've paid
I know that nuclear is better than fossil fuels when it comes to carbon dioxide, but nuclear energy is by no means clean. We don't know what to do with the waste we already have and it seems like a bad idea to me to make more when we have so many cleaner options such as wind and solar.
A vegetarian driving a Hummer emits less carbon than a meat eater on a bicycle.
I drove an electric car for seven years because of its advanced technology, not because I have any concerns about energy resources. I have none at all. And when environmentalists say that global warming is dangerous, unprecedented and that we'll have a tipping point for atmospheric carbon dioxide, it's just nonsense.
The Keystone pipeline will spew a massive amount of carbon pollution into our fragile atmosphere. It should be stopped.
Looking back, I underestimated the risks.
The planet and the atmosphere seem to be absorbing less carbon than we expected, and emissions are rising pretty strongly. Some of the effects are coming through more quickly than we thought then.
Climate change is a crucial issue in todays global agenda.
Hopefully, we will wake up to this reality, sooner rather than later. Pressure has been mounting on European Union Member States to act decisively to fight global warming. A bold target has been set reducing carbon dioxide emissions by 20 by 2020.
Some argue that now isn't the time to push the green agenda - that all efforts should be on preventing a serious recession. That is a false choice. It fails to recognise that climate change and our carbon reliance is part of problem - high fuel prices and food shortages due to poor crop yields compound today's financial difficulties.
I do not believe we can effectively move Australia to a lower emission economy, which is what we need to do if we're going to make a contribution to a global reduction in greenhouse gases, without putting a price on carbon.
Grief is an element. It has its own cycle like the carbon cycle, the nitrogen. It never diminishes not ever. It passes in and out of everything.
A hydrogen atom in a cell at the end of my nose was once part of an elephant's trunk. A carbon atom in my cardiac muscle was once in the tail of a dinosaur.
In 'Tarahumara' land, there was no crime, war or theft.
There was no corruption, obesity, drug addiction, greed, wife-beating, child abuse, heart disease, high blood pressure, or carbon emissions. They didn't get diabetes, or depressed, or even old: 50-year-olds outran teenagers.
The body can endure compromise and the mind can be seduced by it.
Only the heart protests. The heart. Carbon-based primitive in a silicon world.
Many years ago it was taught that plants and animals were composed of different materials: plants, of a chemical substance of three elements,- carbon, hydrogen, and oxygen; animals of one of four elements, nitrogen being added to the other three.
The record-breaking extreme weather events causing chaos across the globe should be a wake-up call. The transition to a low-carbon economy will be much more painful if we wait until there is a climate crisis before recognising that more than half of the world's fossil fuel reserves will have to remain in the ground.
We have to get to the point where each individual, each corporation, each community chooses low carbon, because it makes fundamental sense. It should become a no-brainer.
How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more than one degree... We don't have much time left.
Instincts under pressure crush the carbon of conformity and create diamonds.
Each new season of life offers to train us for the next season if we pay attention and adapt.
There will be no carbon tax under the government I lead.
Some solutions are relatively simple and would provide economic benefits: implementing measures to conserve energy, putting a price on carbon through taxes and cap-and-trade and shifting from fossil fuels to clean and renewable energy sources.
Bicycles are almost as good as guitars for meeting girls.
The dangers of carbon dioxide? Tell that to a plant, how dangerous carbon dioxide is.
Nevertheless, just as I believe that the Book of Scripture illumines the pathway to God, so I believe that the Book of Nature, with its astonishing details-the blade of grass, the Conus cedonulli, or the resonance levels of the carbon atom-also suggest a God of purpose and a God of design. And I think my belief makes me no less a scientist.
Please eat less meat - meat is a very carbon-intensive commodity.
Preventing global warming from becoming a planetary catastrophe may take something even more drastic than renewable energy, superefficient urban design, and global carbon taxes.
Why, for example, should a group of simple, stable compounds of carbon, hydrogen, oxygen, and nitrogen struggle for billions of years to organize themselves into a professor of chemistry? What's the motive?