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    DDT
    January 29, 1958 - America, U.S.A.

    The Boston Herald printed a letter from Olga Owens Huckins attacking DDT pesticide as dangerous. Huckins was a friend of Rachel Carson, and also sent a personal letter to her, which together prompted the writing of Carson's book Silent Spring, an early call for modern environmentalism. Carson collected research and data. She concluded that organic-pesticides built up in crops and sprayed crops, transferred to birds and other animals and was responsible for the poisoning of the surrounding fauna. Silent Spring asked important questions about balancing industrial and agricultural needs, progress, the protection of the environment and the quality of life. Carson's skilled writing awakened the conscience of America. It took until 1972 to get its use banned in the U.S.

    FIRST PATENT FOR GASOLINE ENGINE VEHICLE
    January 29, 1886 - Mannheim

    Karl Benz applied for a patent for his Benz Patent Motorwagen, a three-wheeler vehicle with a Benz-designed one-cylinder four-stroke gasoline engine. This patent, DRP-37435, “Fahrzeug mit Gasmotorenbetrieb,” (Vehicle with gas engine) is recognized as the world's first patent—regarded as the birth certificate—for a practical internal combustion engine powered automobile. Though the vehicle was awkward and frail, it incorporated some essential elements that would characterize the modern vehicle: electrical ignition, differential, mechanical valves, carburetor, engine cooling system, oil and grease cups for lubrication, and a braking system. The first public test-drive took place on 3 Jul 1886 in and around Mannheim. The patent was issued 2 Nov 1886, effective from the date of the application.

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How To Brew Your Own Beer :

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There's no bottle of brew that tastes quite as good as the one you've made yourself. It's also a fun hobby. So what are you waiting for? Here's how to brew your own beer.

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There's no bottle of brew that tastes quite as good as the one you've made yourself. It's also a fun hobby. So what are you waiting for? Here's how to brew your own beer.

There's some equipment you are going to need. You should be able to pick it all up for under $200, and it's not hard to find. Any local brewing supply store or online brewing site will have everything you need which includes:

Brewing Pot

Plastic hose

Fermenter

Bottling bucket

Airlock and stopper

Bottle brush

Bottle capper

Thermometer – the stick-on type is best

Small bowl

Saucepan

Spatula

Oven mitts

Wooden mixing spoons

The easiest way, especially for beginners, is to pick up a beer kit. It will contain all the needed ingredients, which include yeast and hopped malt concentrate. You also need to buy fermentables, which are what add the different flavors to your brew. Of course you can buy your ingredients separately, but the kit is a foolproof way to get everything you need.

You will need to sanitize all your equipment. In fact, it's the most important thing you will do. Clean everything with hot soapy water. Then you need to sanitize all your equipment by using either the iodine solution or chlorine solution that came with your brewing equipment.

Now that everything is sterilized, you are ready to start. Put two quarts of water in your brew pot; then heat to around 180F or until it steams; then remove it from the heat. Add your beer kit and fermentables. Follow the instructions provided with your kit.

Stir until everything is dissolved; then put the lid on and leave it sit for 20 minutes on low heat. Add your mix, which is called the wort, to the fermenter which should be filled with four gallons of water. Stir for 4 minutes. This oxygenizes the mixture. When the wort is cool to the touch you can add your yeast.

Now it's time to let your wort ferment. The process starts right away and continues for 5 days. During this period it's important to keep the temperature constant, around 65F, and to keep your wort in a dark place. You'll be able to tell when your wort is fermenting because you will see tiny little air bubbles rising to the top.

When 5 day arrives you need to start checking your beer each day. When there are no more air bubbles your beer is ready to bottle. Don't be impatient. If you don't wait for the fermenting to complete you'll wreck your beer's taste.

Before you bottle you have to prepare what's called the primary solution. This is what carbonates the beer. In your saucepan add 2 cups of water and


Source : PLR

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