World Articles
226: The Origin Of Spiders
The order Araneae (spiders) is traditionally divided into three divisions:
1) Mesothelae (also known as the Liphistomorpha). These normally have a narrow sternum and always have 4 pairs of spinnerets
2) Mygalomorphae (tarantulas and relatives - also called the Orthognatha or the Theraphosomorphae) . These all have downward pointing fangs (called
227: What is Tidal Power
Tidal Power, often referred to as tidal energy, is achieved through the capture of the energy created as water moves in ocean currents and tides. Two types of tidal power can be harnessed for energy-efficient power. The first is called kinetic energy. This is tidal energy directly created as the water is moving in rivers and in oceans as tides. The
228: What We ve Learned From Birds About Flight and Why It Took So Long
Eons ago, Zork stood outside his cave and watched a vulture spread his wings and soar off a cliff. Zork decided to try this himself. Too late, he realized that his lift to drag ratio was about zero - no lift and lots of drag - and he had the glide ratio of a brick. Zork's decedents gave up on aviation for 50,000 years.
Since humans first loo
229: Air Conditioning And The Environmental Impact
When you think of air conditioning, do you ever wonder who made it, the history behind it, maybe different applications involved or even environmental concerns? Well, if so, then you have come to the right place. We will not only go over each of these but you will find that a Sub-Heading for ease of use marks each section.
The Air Conditione
230: Compressed Air Flow MeterNo More Loss
Many people try to save much money when it comes to compressed air. Indeed, this is a very true situation, because compressed oxygen is one of the most expensive forms of energy out there. And, when the air is compressed and kept in a storage place, it may leak, and this leads to more costly maintenance, eventually labeling itself one of the most e
231: Driven to Save our World
Energy efficiency is not just about what we do at home and at work. Its what we do everywhere. Nowhere can we practice energy efficiency that in the way we travel. We can practice energy efficiency in the vehicle we choose and the way we drive it. Here are some tips on driving with energy efficiency in mind.
Perhaps the number one detriment to d
232: How Much Junk One Should Have Before Calling a Junk Removal Company
Cleanliness and tidiness at home are very important, and you can remove your junk with the help of a junk removal agency. However, you may be quite unsure when is the best time to have your junk removed. It is really not a good idea to call a junk removal company when you have too little junk, but you should also bear in mind that an increase in th
233: How to Plant Evergreens
North, South, East or West - no matter where you live - there are evergreens for every garden. The luxuriance of their foliage, the different shades of green, their variety of forms, textures, and heights contribute lavishly to the planting design. Indeed, like old friends, they can always be depended on to give us real enjoyment through the years.
234: Iraq Oil The Spoils of Victory
In 1999, when Dick Cheney was CEO of Halliburton, he asked the rhetorical question 'Where is the oil to come from?' and then gave the answer 'The Middle East, with two thirds of the world's oil and the lowest cost, is still where the prize ultimately lies'. George Bush also has a background in the US oil industry, and the opportunity to take contro
235: Is Solar Power Finally Going to Take Off
Solar power has been hyped for decades now as one of the best solutions to our energy problems. But in simple truth it hasn't progressed the way many have hoped it would. Has that changed yet?
Installing solar power for your home is still incredibly expensive, even with government rebates, and earning your money back takes more years than most c
236: It s Life Jim But Not As We Know It
They say the answer to many problems is right in front of you if you'd only stop looking so hard.
News reports are declaring an end to the problem of global warming. Scientists have discovered that sunglasses provide the clue to saving our planet from the ravages of our throw away lifestyles and lack of consideration for our delicate eco system.
237: Mohammad Yunus And The New Revolutionaries
In 1974, I found it difficult to teach elegant theories of economics in the university classroom, in the backdrop of a terrible famine in Bangladesh. Suddenly, I felt the emptiness of those theories in the face of crushing hunger and poverty. I wanted to do something immediate to help people around me, even if it was just one human being, to get th
238: Natural Pest Bat Control
Considered to be pests by many folks, bats do hold a special and beneficial place in the ecosystem. When bats are nesting in your home them bat control is important and natural bat control is even better. Most species of bats found in North America are not harmful to people or animals and bats do help control insect pests like mosquitoes, eating ma
239: Recycling Cans Could Help The Enviroment
Food and drinks cans make up around three percent of household waste that is thrown away by households in the UK on a daily basis. Around 75 percent of all drinks cans in the UK are made from aluminium although there are still almost 2 billion drinks cans that are made from steel. Food cans are often called tins because although they are made fro
240: Renewable Energy Careers Challenging and Satisfying
If you are interested in an exciting career, one choice may be a career in the field of renewable energy. Finding resources for generations to come can be both challenging and satisfying.
If you're looking into this area of interest there are many different professions that will be and are available. Because of the vast variety of existing oppo
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