Greenhouse effect
The greenhouse effect is when greenhouse gasses trap heat in the earths atmosphere increasing the temperature and melting ice caps. The majority of greenhouse gasses are water vapor, carbon dioxide, and methane. If there is more greenhouse gasses in the atmosphere then the atmosphere holds a lot more heat.
Economic impact
Global warming is effecting the economy by making oil prices higher. it is causing car companies to make their cars be more fuel efficient or electric cars. Because of this impact new car companies are opening up and some of the older car companies are losing business for not having fuel efficient cars. This is also causing energy prices to go up.