My thoughts go like this: other countries have focused on public transportation and improved it to the point where it is more practical to take it than drive yourself. While improving the number of miles able to be traveled off the same gallon of gas would without a doubt be an improvement, in order to become fully sustainable we need to ease off of them sooner rather than later. A step forward in decreasing our reliance on personal vehicles is much more cost-effective for the average consumer and much better for the sustainability of the planet. Reinvesting money into improving the public transport system to solve the issues people usually associate with it, cleanliness, speed, and efficiency to name a few would be a great improvement to the already underutilized transport system.The three forms of renewable energy that I will be focusing on are solar, wind, and geothermal energy. These three forms of energy were the ones that I believed would be most likely to gather the greatest amount of energy while still remaining cost-effective. Solar is a common method already used today that after further refining in the efficiency of the panels, will yield much greater numbers. I believe the best panels today are between 20%-30% efficiency which only leads me to assume that if those numbers ever reach 90% or 100% efficiency we will see a vastly different world than the one we see today. Wind energy is also another great option that works in tandem with solar. Both methods are not available 100% of the time due to there being differences in both sunlight and sometimes the wind is just not picked up. Combining these methods will prove to be very effective if implemented correctly. Finally, geothermal energy is a recent discovery with promises to deliver vast amounts of reliable energy that is drawn from the Earth's heat.
Photo sources: https://www.energy.gov/energysaver/estimating-cost-and-energy-efficiency-solar-water-heater
https://archive.epa.gov/climatechange/kids/solutions/technologies/geothermal.html
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