Nature


That said, there are three things you can start doing today to begin the process of ending your reliance on commercial energy products.

Solar Cooking in the Parking Lot

If you have a little bit of patience, and choose your locations carefully, you will not need your stove, microwave, coffee maker, or toaster for the entire summer. Among other things, consider the heat generated inside cars and parking lots. In many cases, if you commute to work, you can probably set up a solar cooker, and let dinner cook while you are working.

For less than $10.00 you can create a functional solar cooker. All you will need to do is take a cardboard box, and build a light reflector for it. The light reflector can be made from cardboard and tin foil. From there, all you will need to do is arrange the light reflector so that sunlight hits the cooking vessel. For the best results, you will need to use a mason jar painted black on the outside. It will also help to put an oven bag around the jar to preserve heat.

Compact Fluorescent Light bulbs

Today, compact Fluorescent light bulbs (CFLs) are known for saving electricity. Depending on the wattage, one CFL can take the place of four, perhaps five incadescent light bulbs. At the same time, you will enjoy as much as $5.00 per month savings on each electric bill.

Unfortunately, some capitalize on the fact that CFL’s contain mercury. At the same time, many manufacturers continue to dump mercury contaminated waste into the environment. In many cases, one day of output from these factories outstrips what is added to landfills from CFL’s.

Generate Your Own Electricity

Without a question, ending your reliance on commercial electric supplies is one of the best things you can do for your financial future, as well as the environment. Among other things, solar panels and windmills can generate a significant amount of electricity in a small amount of space.

As an example, for under $200.00 you should be able to locate a small aluminum windmill with a generator attached. Chances are, you will also find these items will add a beautiful accent to your yard. In addition, if you install these devices now, you will also be able to enjoy a number of tax rebates.

Today, there are many ways to save energy. For the most part, you will need to employ a combination of solutions in order to see significant results. On the other hand, even if you achieve a small, or seasonal energy reduction, you will be able to reproduce the results on a consistent basis. In addition, once you start looking for ways to save energy, you are likely to find, or even invent several methods on your own.

For more great tips to save money by saving energy visit earth 4 energy. With the right motivation to reduce your bills by going green we enjoy working with others by revealing earth for energy secrets which most people will never know guide.

Zilker Metropolitan Park is perhaps the brightest jewel in Austin’s golden crown of parks and other outdoor venues. It is 351 acres of endless amusements for all ages and interests. There is something for every season of the year, from the Trail of Lights at Christmas to a dip in the cool waters of the spring-fed pool on a steamy summer day.

It can be hard to pick a spot to begin exploring, but Barton Springs Pool is probably the best known attraction in the park. The three-acre pool is an average sixty-eight degrees year around. The grassy hills sloping down to the pool’s edge offer shady spots to put down a blanket for a day of swimming and picnicking with family and friends.

The underground spring that feeds the Barton Springs Pool is part of Barton Creek, which winds its way to join Lady Bird Lake. The gazebo at Lou Neff Point, where Barton Creek flows into Lady Bird Lake, is a great place to sit and feed the ducks while getting a view of the interesting architecture in downtown Austin. Enjoying the tranquil waters of the lake that flows across the northeast edge of Zilker Park, it is fun to watch people row by in the kayaks and canoes available for rent.

The Beverly Sheffield Education Center is a popular stop for school field trips. It offers the Splash exhibit, which demonstrates how the Edwards Aquifer, an important water source for the Austin area, was formed. The educators at the center also give students the nitty gritty details about bugs and plants. Any given weekday will find youngsters roaming Barton Creek looking for insects, small fish and minnows among the pools of algae and mud. With long nets in hand, they can furrow out creatures hiding in the hillsides around Zilker Park.

Another popular place in Zilker Park for field trips is the Austin Nature and Science Center. Located on the west side of the park, this attraction is dedicated to offering exhibits, educational programs and recreational fun exploring the natural world. There are a variety of live animals native to Texas on exhibit, like Martha the coyote and Gandolf the owl. Most of these cute creatures have found a home at the Nature Center after being rescued from well-meaning people who tried to make them into pets. Along with viewing the animals, children can dig for bones in the Dino Pit and use scientists’ tools in the Naturalist Workshop.

For the plant lovers, there is the quiet beauty of the Zilker Botanical Gardens and the Zilker Nature Preserve. A place can be found for quiet meditation or a quick sketch among the Hartman Prehistoric Garden, the Taniguchi Oriental Gardens and the Mabel Davis Rose Garden. The preserve offers sanctuary for native plants and animals.

Located in the heart of the park are the large wooden playscape and the Zilker Zephyr miniature train. Young and old will get a kick out of the drums and giant xylophone that are part of the playscape. The 25 minute train ride is a great way to see the park and wave at the walkers and runners along the trail as the Zilker Zephyr travels the water’s edge. There is also a snack bar and large picnic pavilion.

The list of park attractions goes on and on, including the Zilker Hillside Theater and the Umlauf Sculpture Garden and Museum. Whether it’s flying a kite, playing a game of soccer on one of the 12 sport fields, or a friendly game of disc golf, there is an almost endless array of things for Austinites of any age to enjoy at Zilker Park.

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For more than 200 years inventors worldwide have filed patents for wave-power technology of a dazzling variety of designs-bobbing objects (”ducks”), buoys, articulated rafts, floating bags, overspills, and many others. There has been no shortage of ideas. Many of these ideas are in fact technically feasible, so it seems a shame that this renewable energy resource has not been much used. The main challenge is building a system that is economically attractive when so many other forms of energy production (nuclear, fossil fuels) receive subsidies and already have infrastructure in place. There are some wave power systems in place around the globe: the Faroe Islands; Islay, Scotland; Oahu, Hawaii (providing power for the U.S. Marine Corps. base there); Santo, Spain; Portugal; and even the world’s first commercial “wave farm” in England.

The World Energy Council has estimated that wave power could produce as much energy in a year as 2,000 oil, gas, coal and nuclear power plants’ twice the amount of electricity produced worldwide-by generating as much as 2 terawatts (that’s 1 trillion watts).

Not every place is a candidate for wave power generation. Prime locations identified are Scotland, northern Canada, southern Africa, and the Atlantic Northeast and Pacific Northwest of the United States. Experts have estimated that wave-power systems in the Pacific Northwest alone could generate up to 70 kW per meter of coastline.

Typical Designs
Wave-power systems can be located onshore or offshore, and come in a surprising range of designs. There are currently four basic “capture” methods: point absorbers (largely vertical, with a relatively small footprint on the surface); attenuators (horizontal footprint, arranged parallel to the waves to undulate with the flow); terminators (perpendicular to the waves); and overtopping (perpendicular to the waves, which break over the system). There are different power take-off systems including hydraulic ram (water hammer pumps water above the starting point); elastomeric hose pump (peristaltic, like your intestinal tract), pump-to-shore, hydroelectric turbine, air turbine, and linear electrical generator. Here are some systems already in operation, or close to it:

OFFSHORE: POINT ABSORBER SYSTEMS
1.The Salter “Duck”-In 1970 Stephen Salter (”the father of wave power”), a professor at the University of Edinburgh, designed a wave-power device that could both stop 90 percent of the wave motion and convert 90 percent of that into electricity, a standard that all other designed continue to be measured against. Ironically, the Duck itself never went into use. During the 1990s, a project based on the Duck and dubbed the OSPREY (Ocean Swell Powered Renewable Energy), commenced in the Clyde Estuary of the Scottish coast. Capable of generating 1 mW of power, the OSPREY was on its way to becoming an unqualified success until Hurricane Felix came along and sunk it (at great expense in terms of both money and confidence).
2.The AquaBuOY wave energy device-AquaBuOYs (Finivera Renewables) really do look like navigational buoys, and this is no coincidence. Obviously, maximum output from a wave-power device should be during those times when the waves are at their highest, but if the technology can’t withstand rough seas (as with the OSPREY, above), they aren’t much good. Operating on the premise that since navigational buoys can survive for decades in all sorts of conditions, the AquaBuOYs were designed to ride the waves for an estimated 100 years. The vertical wave action drives a two-stroke hose pump that directs pressurized seawater into a turbine connected to a generator; the resulting power is sent via an underwater transmission line. While at least four projects are in the permitting process (including one in Makah Bay, WA), as of this writing 3.PowerBuoy “Like the AquaBuOY above, the PowerBuoy resembles a navigational buoy, although one with long cylinder extending far below that houses the mechanics of the system. These PowerBuoys (Ocean Power Technologies) are placed from one to five miles offshore in 100 to 200 feet of water, and can be ganged together to form a “wave-power farm” such as the one to be installed off the coast of Santo, Spain. That 1.39MW station will have one 40kW and nine 150kW PowerBuoys .

OFFSHORE: ATTENUATOR SYSTEMS
1.Pelamis - Ocean Power Delivery, Ltd., developed world’s first commercial offshore wave-power facility using its Pelamis Wave Energy Converter, a string of steel cyclinders hinged to articulate. It lies half-submerged, like a 150-meter-long, bright red sea snake (pelamis is the genus for the sea snake), more or less facing into the waves. The cylinders contain hydraulic pumps activated by the wave action; the electricity comes as high-pressure oil gets pumped into generators. The first phase of the wave farm, located 5 km off the coast of Portugal, comprises three 750kW Pelamis “snakes” that combined to generate 2.25 MW; another 28 are expected to be added, bringing the total power generated to 22.5 MW’enough to provide electricity for more than 15,000 homes.
OFFSHORE: TERMINATOR SYSTEMS
1.Nearshore OWC-This is an offshore version of the Limpet, described below.
OFFSHORE: OVERTOPPING SYSTEMS
1.Wave Dragon-Overtopping systems work very much like hydroelectric dams, using the potential energy of water stored at an elevation higher than the turbines it drives. The Wave Dragon overtopping system funnels the waves into its own reservoir to create a head; the water is then released through channels that contain turbines. The Wave Dragon is moored 25 to 40 meters offshore in deep water, somewhat like a floating beach.

ONSHORE: OSCILLATING WATER COLUMN:
1.Limpet (Land Installed Marine Powered Energy Transformer)- This an oscillating water column (OWC) system to convert the waves’ kinetic energy to electrical power. Picture a box with the open end submerged but slightly tilted toward the incoming waves, with air trapped inside the box. Now imagine there is a narrow outlet for this air, and inside this tube is a turbine. As the waves raise the level of the water inside the box, the air rushing in and out of the tube powers the turbine. A Limpet system (WaveGen) in Islay, Scotland, uses an inclined oscillating water column (OWC) system optimized for the area’s anverage annial wave intensity, and feeds a pair of 250kW generators. The Limpet power station in the Faroes is very similar. WaveGen also designs a near-shore oscillating water-column system.

There are many companies designing wave-power systems using these and other designs (such as the tapered channel system, an onshore system, and the pedulor system, an offshore device), and new ones seem to come along frequently as more countries come to recognize the potential of wave power.

Wave Power Advantages
1.Wave energy is an abundant and renewable resource.
2.Even though not every country has coastline, the combined potential output of wave-power generation would meet all the electricity needs of the world.
3.Although the equipment represents a substantial investment, the “fuel” is free and not confined by geopolitical boundaries.
4.The effect on the environment is deemed to be minimal.

Wave Power Disadvantages
1.These are most effective near coastlines, of which there is a finite supply.
2.Large scale systems are still in the early stages.

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While it shouldn’t be, it’s often hard for people to wrap their minds around the concept of biodiversity. This is in part because the concept of biodiversity is a complex one, and partly because so many agencies have vested interests in people seeing anything that conserves resources as a threat to their lifestyles.

The first steps toward defining the concept of biodiversity were undertaken by E.O. Wilson in the mid-1980s. Since then, the concept has become so important that there are a number of world, national, and local initiatives targeted at reducing biodiversity loss by 2010.

The concept of biodiversity breaks down into three major factors, all of which are interwoven:

First is the concept of genetic diversity. This refers to the variation of genes within a single species and can be further broken down into two components: genetic variations within distinct populations of the same species, and genetic variations within a population.

Next is the concept of species diversity. This takes us up one rung as we consider the varieties of species within a region. There are two main measures to assess this: the first is species “richness,” or the number of species, both plant and animal, that inhabit an area; the second is the more precise “taxonomic diversity,” which takes into account the relationships between species in addition to their numbers.

The third factor, and the overarching one, is ecosystem diversity. Since the boundaries between various biological communities are highly fluid, this is the most difficult factor to measure accurately, yet it may very well be the most important, since this is where changes that affect all life occur. Climate change, for example, is often caused by things like global warming, and is among the greatest threats to ecosystem diversity.

Biological diversity includes the variety of ecosystems, and their patterns. It also includes their linkages across regional landscapes. There is a hierarchy of the parts and processes of biological diversity that is, admittedly, artificial. This hierarchy also has a distinct human context (i.e., things are seen in the context of how useful they are to humans).

Still, it provides a focus for the concept of biodiversity, which is so infinitely varied that any lens taken to it must be narrowly focused compared to the full spectrum of both the topic and human needs.

Understanding the concept of biodiversity should be a high priority for everyone, since we cannot preserve it if we don’t understand it. Not preserving it will ultimately affect the lives of all of us. One of the best ways of understanding the very broad concept of biodiversity is reading the various definitions used by scientists, philosophers, environmentalists, and others.

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Spider exists everywhere from the tropics to Antarctica. They are not insects. Unlike insects they are made of two different parts that are connected to each other with a small stalk. The two parts are the head part and the abdomen part. On the head part there is eight eyes and four appendages. On the first two appendages are there is a fang that is linked to the poison gland. The spiders use these two fangs to immobilize its prey or to protect itself.

Below there is two other appendages that is used as a mouth. Below there are eight legs. There are four on each side of the spider. The abdomen parts of the spider’s body are mostly for storing food. But this part also makes the spider silk and the lungs are located here.

The silk is produced in a special gland in the abdomen part. The silk can be extremely strong. Most spiders use silk to catch their prey. Most spider use the silk in a web the trap insects. But there are other methods as well. The webs adhesive properties only work for about two days. Then the spider eats up the silk and builds a new web. The size for spiders can differ a lot. Most spiders are small. But the body of some spiders can be up to 9 cm. And then they have legs as well. So they could be very large.

After the spider has immobilized the prey with its venom they then crush their prey with their teeth. They then spit up an enzyme from there stomach that will break up the tissue of their pray and the tissue will become a liquid food for the spider. The spider will then filter the food through its hair in the mouth and suck the food into the stomach. This is done by making an under pressure in the stomach by using the muscles around the stomach.

In a satisfied spider a very large part of the abdominal part of the body are made up of liquid food that is stored in the spider. The spider is because of this able to survive very long time without any food.

There are over 34,000 different known species in the world. Some large spiders can give a painful bite, but they are usually not so harmful. Other spiders do have a dangerous venom but their teeth are too weak to penetrate the human skin. But of the 34,000 species of spiders there are only about 200 that could be hazardous to humans. These both have a poison that are hazardous and have a bite that can penetrate the human skin. The most known of these are the black widow spider, the brown recluse spider and the funnel web spider.

The black widow spider is the most venomous spider in North America but as it only injects a very small amount of venom it is not very often people die. Brown recluse spider could give very bad wounds. They are more serious for kids. The funnel web spider is very dangerous but so far only 13 deaths are known.

Robert L J Bloom is the author and can provide additional information about pictures of spider bites from many types of spiders. He also provides more information about black widow spiders. The website is http://www.pictureofspiderbite.com .

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