A bat with outstretched wings, and another with wings folded

durer bat det 2Albrecht Durer ((May 1471 – April 1528)
painter, engraver, printmaker, mathematician, theorist

 

Bats are an extraordinary evolutionary success, the only mammals to conquer the air.
Nothing else on earth flies the way they do.


James Gorman
 

https://www.youtube.com/watch?v=FkeSSdwbnPg&feature=player_embedded

Du Bon Usage Des Arbres

lindenLinden Tree On A Bastion
Albrecht Dürer (1471 – 1528)

 

 

Frédéric Joignot, The Guardian

“Man is senescent, that is to say is programmed to die, but a plane tree is not,” says French botanist Francis Hallé. After its leaves have fallen, life begins again in the spring and the tree recovers its youthful genomes. If it is not subjected to accidents, diseases or humans, the plane tree could live for centuries.
The botanist knows of a 2,000-year-old olive tree in Roquebrune-Cap-Martin on the Côte d’Azur

Humans, with a mere 2 square metres of skin, underestimate the surface area of a tree. To calculate that you need to measure both sides of each leaf, add the surface of the trunk, the branches and boughs, the perennial and feeder roots and the absorbent root hairs, not forgetting the bark pockets. A 15-metre tree in leaf would cover a total area of 200 hectares, which is the size of Monaco. A tree doubles its weight when wet, and its entire surface breathes and allows us to breathe.

Hallé believes that arboreal photosynthesis is our best ally in the fight against global warming. Buffon’s plane tree, like all trees, absorbs quantities of carbon dioxide, responsible for greenhouse gases, and between 20% and 50% of matter produced by the tree, including wood, roots, leaves and fruit, is composed of CO2. When trees breathe they clean the atmosphere and retain CO2 and urban pollutants such as heavy metals, lead, manganese, industrial soot and nitrous oxide. These are stored in the wood. That is why we should refrain as much as possible from cutting down old trees. The older they are, the better they control pollutants.

At the same time, trees release oxygen that allows us to live. An adult human consumes about 700g of O2 per day, or 255kg per year. In that time, an average tree produces 15kg to 30kg, so about 10 trees are required to provide oxygen for one person. Trees also humidify and cool the atmosphere by evaporation and transpiration. A wooded area of 50 square metres brings the temperature down by 3.5C and increases the humidity by 50%. Leaf movement, especially in conifers, releases negative ions that are supposed to have beneficial effects on health and mood.

http://www.guardian.co.uk/environment/2012/jan/03/trees-allies-against-climate-change

Columbine (Aquilegia)

Albrecht Dürer  21 May 1471 – 6 April 1528

Published in: on April 28, 2011 at 9:50 pm  Leave a Comment  
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A Rabbit as King of the Ghosts

Albrecht Dürer 1471–1528

The difficulty to think at the end of day,
When the shapeless shadow covers the sun
And nothing is left except light on your fur—

There was the cat slopping its milk all day,
Fat cat, red tongue, green mind, white milk
And August the most peaceful month.

To be, in the grass, in the peacefullest time,
Without that monument of cat,
The cat forgotten in the moon;

And to feel that the light is a rabbit-light,
In which everything is meant for you
And nothing need be explained;

Then there is nothing to think of. It comes of itself;
And east rushes west and west rushes down,
No matter. The grass is full

And full of yourself. The trees around are for you,
The whole of the wideness of night is for you,
A self that touches all edges,

You become a self that fills the four corners of night.
The red cat hides away in the fur-light
And there you are humped high, humped up,

You are humped higher and higher, black as stone—
You sit with your head like a carving in space
And the little green cat is a bug in the grass.

Wallace Stevens

Published in: on June 27, 2010 at 1:39 am  Leave a Comment  
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