1.GLOBAL WARMING & its effect on us:-
Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die.
Yes we can feel global warming.
GLOBAL WARMING & CLIMATE CHANGE:-
It's hard to think of many things powerful enough to disrupt life across our entire planet. Huge natural disasters—like earthquakes, erupting volcanoes, or tsunamis (freak tidal waves)—can affect many thousands of people, but their impacts are usually confined to just one region of the world. Terrorist attacks cause worldwide panic and horror, but their effects are usually quite localized. Catastrophic nuclear explosions, like the one that happened at the Chernobyl nuclear plant in the Ukraine in 1986, can spread "fallout" (toxic radioactive debris) across an entire continent—but even they do not affect the whole Earth. Global warming, which is a gradual rising of Earth's temperature, is different from all these, representing a scale of threat greater than anything humans have faced in recent history. Unless we tackle the problem soon, it could transform the planet we life on, making the climate (Earth's weather patterns) much more erratic, forcing many species into extinction, and making life much harder—especially for people in developing countries.
3. GREENHOUSE EFFECT & CAUSES:-
Anyone who has either spent time in a greenhouse for plants or simply gotten into a car on a hot summer day has personally experienced the greenhouse effect. Heat enters an enclosed area and then reflects back and forth building upon itself. While the ambient temperature outside might be 85 degrees Fahrenheit, inside an automobile the temperature easily zooms upward to 130F. Simply put, the greenhouse effect is what happens when heat is trapped in one way or another and then increases as more heat radiation is added. You have probably heard the dire warnings many times. Carbon dioxide (CO2) from mankind’s use of fossil fuels like coal, oil, and natural gas is building up in the atmosphere. Carbon dioxide is a greenhouse gas—it traps heat that would otherwise escape into outer space. Al Gore warns that global warming caused by carbon dioxide emissions could increase sea levels by 20 feet, spin up deadly hurricanes. It could even plunge Europe into an ice age.
Science does not support these and other scary predictions, which Gore and his allies repeatedly tout as a “scientific consensus.” Global warming is real and carbon dioxide emissions are contributing to it, but it is not a crisis. Global warming in the 21st century is likely to be modest, and the net impacts may well be beneficial in some places. Even in the worst case, humanity will be much better off in 2100 than it is today.
4. GLOBAL WARMING EFFECTS ON PAKISTAN’S AGRICULTURE SECTOR:-
Here we are, just about bankrupt, the confidence in the investment climate evaporated, and the country is busy fire fighting one emergency after another. How dare then we raise an issue that can wait for a few minutes, even for a few days? You might say, the nation is used to waiting until the calamity is upon us, and the matter under discussion should be no different and as usual we shall try to extinguish one more fire at the appropriate time. This is indeed what we have done for almost everything that is important to us, for the last fifty years. We have had excuses after excuses for everything from the constitutional issues to not solving the illiteracy problem in the country. We have known for twenty years that someday we will have to show the world that we possess an atomic bomb. Well, what did we do to plan for it? Did we dig shelters, and store food for the lucky few that might survive such a catastrophe and did we plan for a financial rescue of the country? Sit back and relax, for the calamity that is about to strike us is so huge that we will forget all the difficulties we have faced in the past including the debacle of East Pakistan. Before you know it, this great famine will be upon us and a large number of our people will die of malnutrition, dehydration and famine unless of course we plan for the great fight with all our ingenuity, power, and resources, and we start to do it now. For once, for God’s sake, let us get ahead of the curve and not be begging at the moment of truth. By our own projection, we will be over four hundred million people before the year 2050, possibly the third largest country in the world. Providing food for this large population will be the biggest challenge for us as our area under agriculture will not increase much more than thirty percent, even if we irrigated vast areas of Baluchistan. The global temperature rise, especially warmer evenings, will kill the crops we are so dependent on for the very survival of our nation. Remember that we cannot even produce the food we need now.
5. GLOBAL WARMING PROBLEMS:-
The real problem is that the global trends are working against us. Developing countries like India and China are becoming more affluent as people there escape from poverty. More people are buying cars and aspiring to the same kind of lifestyle that people enjoy in the United States and Europe. With global energy and fossil-fuel use still increasing, major climate change seems almost unavoidable. That doesn't mean we should give up trying to stop it. With a dramatic international effort, we might be able to halt the growth in carbon dioxide emissions by 2100. If we can keep carbon dioxide levels in the atmosphere to below 550 ppm (roughly twice what they were before the Industrial Revolution and about 45 percent higher than they are today), flooding caused by climate change in low-lying countries like Bangladesh will be reduced by as much as 80-90 percent.
6. GLOBAL WARMING SOLUTIONS:-
To reduce the impact of climate change, we need to reduce global warming. That means producing fewer carbon dioxide emissions and it might mean using less energy or using it more efficiently (doing the same things with less energy or better technology). In practice, reducing emissions is both very simple and very hard. It's very simple for any one of us to reduce our personal carbon dioxide emissions. You can replace the incandescent lamps in your home (ones that make light by getting hot) and use energy-saving fluorescent lamps instead. You can switch your utility company so more of your electricity is made from renewable energy. Or you could bicycle, walk, or take the bus from time to time instead of using your car. You could put on a jumper instead of turning on the heating, open your windows instead of using the air-con, and drive with better fuel economy in mind. These things are all very easy to do and will make an immediate difference.
7. WHAT ONE CAN DO ABOUT GLOBALWARMING:-
• Restrict the use of cars to travel longer distances, you can walk smaller distances or use a bicycle instead. This will only limit the increase of carbon dioxide and carbon monoxide in the atmosphere. You can also tune up your car regularly to increase its fuel efficiency.
• Switch off the lights, fans and air conditioners when not in use. Replacing your current tube lights and bulbs with fluorescent lights is a smart way to increase energy efficiency. They will also amount to huge energy savings in your monthly electricity bills.
• Minimize the use of deodorants, as they contain CFC (Chlorofluorocarbon) that contributes to the ozone depletion, which in turn gives rise to most destructive effects. CFC is also used as refrigerants and other solvents; you can go in for a deodorant or a refrigerator that is CFC free.
• The most important of all, let us all vow to plant at least one tree every year, may be on your birthday every year and nurture it. A single tree can absorb amazing amounts of carbon dioxide over its lifetime. Let us all contribute to making this world a better place to live in. You can also gift a sapling to your friend or relative on his/her birthday to raise awareness.