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Solutions to solve global warming:
1. Plant more trees. This would thus mean that more plants would go through photosynthesis in the day, whereby they take in carbon dioxide and release oxygen, reducing the amount of heat trapped.

2. Invest in clean jobs and clean energy. Jobs. Millions of jobs. Manufacturing solar panels and wind turbines and retrofitting homes will get American workers back on their feet and get our economy rolling again. Studies show that investing in clean energy technologies would produce more jobs than similar investments in oil and gas – and these jobs can be created without increasing the federal debt. Investments in clean energy will also help end America's oil addiction and usher in a new, secure energy future.

3. Drive smaller cars. Save on gas. High-mileage cars use less gas, helping keep American dollars at home and in our pockets. Retooling auto plants will help U.S. carmakers meet the demand for fuel-efficient cars, find profitability at home and compete once again in the global market. If we make our cars more efficient over the next ten years, we'll cut global warming pollution by more than 350 million metric tons and save 2 million barrels of oil a day.

4. Create green homes and buildings. Cost savings. Outside of your mortgage, the next biggest cost of homeownership is heating and cooling your home. An average retrofitted home can save $700 to $1150 a year in energy costs. On a national scale, the benefits are huge. Retrofitting just one out of every 5 American homes would avoid the need to build 13 mid-sized power plants every year. Retrofitting every house in the country would cut as much global warming pollution as taking a half a million cars off the road – and would save more oil and gas than we could extract from drilling in our coastal waters.

5. Build better communication and transportation networks. Shorter drive times, less pollution. Less time behind the wheel means less money spent on gas -- and more time for you. Plus, studies show that a neighborhood where people walk more is healthier, safer and friendlier. And when people can walk to the store, the office, or the movie theater instead of driving, we slow down global warming. Each "smart growth" community reduces global warming pollution by 20 to 40 percent compared to the norm.

6. Save electricity. Electricity is essential for research on global warming. It also can power cars which would thus reduce the amount of petrol needed. Thus this would reduce the pollution in the air.

7. Set limits on global warming pollution. More jobs. Less pollution. Fewer disasters. By charging polluters, Congress could raise $100 to $150 billion annually to invest in clean energy. These investments in turn would spur the growth of a clean energy economy and create 2 million new American jobs in two years. And by making significant reductions in global warming pollution by mid-century, scientists say, we can avoid some of the most disastrous consequences of global warming, such as the melting of the Greenland ice sheet and a dramatic rise in sea levels.

8. Save water. As the ice melt,countries would have no clean water to drink, thus they have to start saving water for the future. Though technology has it's way of solving it, it's better to be save than sorry. Thus we should not waste the water that is a necessity for us.

Singaporeans can play an active role in saving the planet by:

1. Switch off all electrical appliances when not in use. This will help reduce electricity wastage.

2. Do not leave the tap running while brushing your teeth. This would help save more water.

3. Do not spend too long in the shower. This would help save more water.

4. Switch to a hybrid car. This would allow less pollution from taking place.

5. Continue the earth day campaign. This would reduce electricity usage.

6. Plant more trees. This would thus mean that more plants would go through photosynthesis in the day.

What are some solutions to get HCI students to engage in protecting our planet:

We can start by giving talks so as to arouse the awareness of HCI students to let them understand the dangers and consequences that will happen if they fail to rescue the earth. Furthermore, we can give talks to suggest to them solutions and measures that we need to take. We can also put up posters so as to remind the students to continue on such measures. I think that students have to do these things with their own initiative to start doing things that will save the earth, thus there is not much HCI can do.