I remember, as a boy of 17 years of age, this was a fascinating thing for me: how we human beings breathe out carbon dioxide into the air, the leaves of plants pick this carbon dioxide up, and the plant gives off oxygen, which we can breathe in and keep our life going.
The key to saving the Amazon and the rest of the world's great rainforests is actually very simple: just put a fair price on the role they play in providing a quarter of the world's oxygen, a fifth of fresh water, and 60 percent of its species.
A root, a stem, a leaf, some means of capturing sunlight and air and making food - in sum, a plant. The green substance of this earth, the chlorophyll, is all summed up in the plants. Without them we perish, all of us who are flesh and blood.
You will be astonished when I tell you what this curious play of carbon amounts to. A candle will burn some four, five, six, or seven hours. What, then, must be the daily amount of carbon going up into the air in the way of carbonic acid! ... Then what becomes of it? Wonderful is it to find that the change produced by respiration ... is the very life and support of plants and vegetables that grow upon the surface of the earth.
No matter how politely one says it, we owe our existence to the farts of blue-green algae.
Trees are the source of your very breath - cut and you shall curtail life itself.
Look, Sage. I don't know much about chemistry or computer hacking or photosynthery, but this is something I've got a lot of experience with." I think he mean photosynthesis, but I didn't correct him. "Use my knowledge. Don't let it go to waste.
They absorb carbon monoxide and carbon dioxide and give out oxygen. What could be more desirable? And they look good in the bargain. Stop chopping down the rain forests and plant more saplings, and we're on our way.
...and his eyes were so green they could turn carbon dioxide into oxygen.
I appreciate and love blue-green algae.
...the life of the planet began the long, slow process of modulating and regulating the physical conditions of the planet. The oxygen in today's atmosphere is almost entirely the result of photosynthetic living, which had its start with the appearance of blue-green algae among the microorganisms.
Trees will improve property values, take pollutants out of the air, help with water runoff.
And to use something as elegant as a tree? Imagine this design assignment: Design something that makes oxygen, sequesters carbon, fixes nitrogen, distills water, makes complex sugars and foods, changes colors with the seasons, and self-replicates. and then why don't we knock that down and write on it?
But on average, I go to the gym about four or five times a week. Today, I'm so experienced in training - I'm actually listening to my body now. My body needs freedom. When I train I create serenity and I produce oxygen in my blood. It helps me to think better and relax. By training, you accentuate the problem.
The trees must breathe so I can breathe.
Every fish fertilizes the water in a way that generates the plankton that ultimately leads back into the food chain, but also yields oxygen, grabs carbon - it's a part of what makes the ocean function and what makes the planet function.
A beautiful plant is like having a friend around the house.
A tree is beautiful, but what's more, it has a right to life; like water, the sun and the stars, it is essential. Life on earth is inconceivable without trees.
The forests of Russia and Brazil are the lungs of the Earth.
Use plants to bring life.
Trees are great. Don't get me started about how clever they are, how oxygen-generous, how time-formed in inner cyclic circles, how they provide homes for myriad creatures, how - back when this country was covered in forests - the word for sky was an Old English word that meant 'tops of trees.'
Life on earth is inconceivable without trees.
The oceans produce up to 70 percent of our oxygen, they shape our climate, and they support an American oceans economy larger than our nation's entire agriculture sector.
If NASA were advancing a space frontier there would be challenges you've never seen before. You have to be creative and you have to patent some new idea. You get to Mars...well, how do we get the water from the soil? I gotta invent a new device that will do that. And the carbon dioxide in the atmosphere, how can we use that? Can we breathe the oxygen from the carbon dioxide?
No human civilization could ever sever our dependence on photosynthesis.
