Category Science

Who creates World’s largest network of marine reserves?

On June 13, 2012 Australia’s then Environment Minister Tony Burke announced that the country would establish the world’s largest network of marine reserves. About one-third of the island-nation’s waters, running to over three million sq.km of reef and marine life around the country’s border will be covered, he said. While creating 60 reserves and also protecting the Coral Sea, the plan will also restrict fishing and oil and gas exploration, in a major step towards safeguarding the environment.

Highly protected areas such as the Coral Sea off Australia’s north-eastern coast and the adjoining World Heritage-listed Great Barrier Reef will also be protected from oil and gas exploration. Both areas, which cover a total 1.3m sq km, have shallow reefs that support tropical ecosystems with sharks, coral, sponges and many fish species.

The numbers of marine reserves off the Australian coast will be increased from 27 to 60.

 

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What happened in the Fukushima disaster?

The earthquake and tsunami that hit northeastern Japan on March 11, 2011, turned out to be more than just a natural disaster. It caused a nuclear accident at the Fukushima Daiichi power plant in Fukushima prefecture, north of Japan. Several reactors at the plant were damaged, raising concerns over radiation leaks. The government set up a 30-km no-fly zone around the facility, and 20 km around the plant were evacuated. Later, the evacuation area was further increased when a spike in levels of radiation was evident in local food and water supplies. Several thousand residents left their homes even as radiation levels remained high months later. About nine years after the worst nuclear disaster since Chernobyl occurred, the site is cleared of immediate danger, but it still has a lot of clearing up to do.

 

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What is the purpose of National Green Tribunal?

Established a year earlier under the National Green Tribunal Act 2010, the National Green Tribunal began functioning in July 2011. This specialized body is “equipped with the necessary expertise to handle environmental disputes involving multi-disciplinary issues’ and is guided by principles of natural justice. It has aimed at disposing of causes related to forest, environment, biodiversity, air and water. While the principal bench function s from New Delhi, the zonal benches function from Bhopal, Pune, Kolkata and Chennai. The setting up of the tribunal was seen a huge step towards realizing environmental democracy. Hundreds of appeals/petitions are heard and judgments delivered every year. For instance, over 500 judgments were delivered by the tribunal in 2016, in cases relating to pollution, conservation, industry operations, thermal power plants, mining operations, and environmental compensation, among others.

 

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When the International Year of Biodiversity was declared?

The United Nations (the U.N.) declared 2010 the International Year of Biodiversity. Throughout the year, several key initiatives were organized to spread awareness on the need to promote biodiversity conversation and encourage everyone – as individuals and groups – worldwide to take mindful steps to stop the loss of biodiversity. That year, the U.N.’s Convention on Biological Diversity held its 10th biannual meeting in Nagoya, Japan. This international legally binding treaty, which came into force in 1993, aims to encourage actions that will lead to a sustainable future.

Biodiversity — the variety of all life forms, from genes up — is vital because diversity makes for healthy, stable ecosystems. From coral reefs to the Kalahari, these natural ‘balancing acts’ are intrinsically valuable. But beyond beauty and amenity, ecosystems also provide essential ‘services’ such as breathable air, clean water and fertile soils. Fisheries, agriculture, medicine and many traditions and ways of life all depend on biodiverse ecosystems.

Clearly, biodiversity is key not just to life on Earth, but to economies and cultures. And for the poor, who often depend directly on land and sea for subsistence, it is literally a lifeline.

 

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Which is considered to be the largest marine oil spill?

Also called the Gulf of Mexico oil spill, Deepwater Horizon oil spill is considered to be the largest marine oil spill in history. It occurred on April 20, 2010 when the Deep Horizon oil rig exploded in the Gulf of Mexico and off the coast of Louisiana, the U.S. The rig was leased by London-based oil company BP. By the time the leak from the exploratory well was capped 87 days later, more than three million barrels of oil had leaked into the waters while the explosion itself had claimed 11 lives. The disaster has had environmental, health and economic impacts.

An estimated 53,000 barrels were flowing into the Gulf of Mexico every day.

The accident also made extensive damages to the marine environment. According to the Centre for Biological Diversity, the oil spill killed over 82,000 birds, 25,900 marine mammals, 6,000 sea turtles and tens of thousands of fish, among others.

 

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WHAT ARE PLANTS USED FOR APART FROM FOOD?

Over thousands of years, human beings have found many uses for plants. Some of the most common ones are shown here.

Plants also provide us with fibres for making cloth, rope, paper etc. There are numerous dyes obtained from plants with which to colour our fabrics. Many plants have oil-rich seeds and these oils can be extracted when they have a variety of uses. Many of them are edible and they can also be used as lubricants, fuel, for lighting, in paints and varnishes, as a wood preservative, waterproofing etc.

The articles below highlight some of these uses.

  • Alternative Lighting: Plant Oils Waxes
  • Fibre Plants
  • Soap Plants
  • Vegetable Oil

Building Materials

  • Insulation: Providing insulation against extremes of temperature, sound or electricity.
  • Pipes: For carrying water etc.
  • Pitch: Used for waterproofing, in paints etc.
  • Plaster: Used for covering walls.
  • Roofing: Used to give a waterproof roof to buildings. See also Thatching.
  • Thatching Used for making thatched roofs.

Clothing
 

  • Buttons: Plants that can be used as buttons. Not including making buttons from wood.
  • Darning ball 
  • Fibre: Used for making cloth, rope, paper etc.
  • Latex: A source of rubber.
  • Leather: Substitutes, that is.
  • Needles: Used for sewing, darning etc.
  • Pins: Used as needles and pins in sewing etc. Also used to lance boils, extract splinters from the skin etc.
  • Raffia: A substitute for that material.
  • Starch: Used as a fabric stiffener.
  • Stuffing: Used in making soft toys, mattresses, pillows etc.
  • Tannin: An astringent substance obtained from plants, it is used medicinally, as a dye and mordant, stabilizer in pesticide etc.
  • Weaving: Items such as grass and palm leaves that are woven together for making mats, baskets etc. See also Basket making and Fibre.

Dyes, paints, inks and paper

  • Blotting paper: Plant that can be used to make blotting paper.
  • Dye: Plants that provide dyes.
  • Ink: Plants that can be used as an ink.
  • Mordant: Used for making a dye more permanent, it also affects the colour of the dye.
  • Paint: Plants used directly as paint. Does not include oil plants and dyes that can be used as ingredients in paints.
  • Paper: Related to the entry for Fibre, these plants have been specifically mentioned for paper making.
  • Pencil: A couple of plants especially mentioned for making the tubes that pencil leads fit into.
  • Size: Used on materials, paper etc to give a surface that will take ink, dyes etc. 

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