Notes on a web journey

posted on: 12 October 2006

Images of nature

filed under: @ 20:06:32

In 1952, Thomas Eisner, a graduate student at Harvard, drove around North America for two months with a fellow student, Edward O. Wilson, to see the country and its insects. For the past half century, Dr. Eisner, now an emeritus professor at Cornell, continued his travels in the fields of entomology, evolutionary biology, chemical ecology and conservation. Some of his best-known research was on the explosive chemical outburst of the bombardier beetle, which he and his colleagues analyzed and photographed.

A carpenter ant and a leaf beetle - Thomas Eisner

Eye-Catching Images of Nature

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posted on: 18 September 2006

The World: humans and wilderness

filed under: @ 09:10:34

Analysis of the human footprint map indicates that 83% of the land's surface is influenced by one or more of the following factors: human population density greater than 1 person per square kilometer, within 15 km of a road or major river, occupied by urban or agricultural land uses, within 2 km of a settlement or a railway, and/or producing enough light to be visible regularly to a satellite at night. 98% of the areas where it is possible to grow rice, wheat or maize (according to FAO estimates) are similarly influenced.

Human footprint map

The last of the wild represent the largest, least influenced areas (defined as above) in all the biomes of the world in all the world's regions. They represent a practical starting place for long-term conservation, places where the full range of nature may still exist with a minimum of conflict with existing human structures.

Last of the Wild map

Wildlife Conservation Society

CIESIN

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posted on: 29 August 2006

The Eastern Garbage Patch

filed under: @ 10:35:21

The very thing that makes plastic items useful to consumers, their durability and stability, also makes them a problem in marine environments. Around 100 million tonnes of plastic are produced each year of which about 10 percent ends up in the sea. About 20 percent of this is from ships and platforms, the rest from land.

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posted on: 14 July 2006

Sun cleans the sky

filed under: @ 11:25:34

On Nature: Sun helps clean the sky

The cleaning agent responsible is the hydroxyl radical (denoted OH), which is created when ultraviolet radiation splits apart a molecule of ozone to produce oxygen atoms that subsequently react with water. The resulting hydroxyl radicals are highly active and quickly react with trace atmospheric gases, such as the pollutant carbon monoxide, which is rapidly turned into carbon dioxide.

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CSS,Javascript and Php studies

Anti spam email
A solution to writing an anti spam email contact link
filed under: Javascript
Background image
A background image randomizer that I used in the second version of this site.
filed under: Javascript/CSS
Javascript menu
A menu that uses Javascript and session cookies.
filed under: Javascript/CSS
MiniSite
Experimenting with CSS and Javascript.A simple but, in my opinion, nice navigation “system”. The MiniSite is a one page site.
filed under: Javascript/CSS
Photo display
Protect copyrighted photos: a simple but effective solution.
filed under: Javascript/CSS
Photo gallery
A photo gallery made for a friend
filed under: Javascript
PHP menu
A PHP menu that can be updated without having to re-publish all the pages is on.
filed under: PHP
Pop-up menu
A very simple pop up menu powered by Javascript. It works also if Javascript is disabled.
filed under: Javascript/CSS
RSS feed
How to write and use an RSS feed
filed under: rss-xml
Tag replacer
The Tag replacer explained and a link to it.
filed under: PHP
Tags search
A search form build and powered using Javascript and the DOM
filed under: Javascript