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There are many alternative sources of energy that can replace fossil fuels, such as solar power, wind energy, hydropower, geothermal energy, and biomass. These sources are renewable, environmentally friendly, and help reduce greenhouse gas emissions. Among them, I believe solar energy has the most potential because sunlight is abundant, available almost everywhere, and technology for capturing and storing solar power is improving rapidly. In addition, solar panels are becoming cheaper and easier to install, making this energy source practical for both households and industries. Therefore, solar energy could play the biggest role in the future.
Let's take a look at optimistic aspects. In 2050 Ha Noi will become a more liveable city for lots of reasons. The city authorities have built a very careful plan to promote advanced technology to make greener motorbikes to deal with air pollution. In addition, the city dwellers are encouraged to make use of public transport system to reduce tracffic jam. The government will also grow more trees and encourage people to use solar panels.
On the contrary, pessimistic people think that the city life will be a dangerous place to live in because the government cannot control the use of private cars and motorbikes. Besides, they don’t believe that citizens will use public transports because this system in our city are aging and not upgraded regularly. It also take time to find a bus and go to the destination in spite of very short distance. People's life will also continue to be threatened because of pollution such as air pollution by burning fossil fuels, emission from cars and motorbikes, noise pollution from constructing buildings and sounding of transportations. The effects of global warming have great impacts on the city dwellers, higher temperature in the summer and colder climate in te winter.
