Total Fossil Fuel Reserves of the Earth
Total use figures from Google - [1]
50,000 exajoules of fossil fuels existed in total, in Earth's history.
Every year, we use about 500 exajoules. That means that there were in existence on the earth through all history only 100x as much as we use yearly.
10,000 times more energy comes from the sun than the entire civilization uses on average. This means that the total fossil fuel equivalent - through the entire history of the earth - comes to the Earth every 3 or so days!
Do the math yourself. Also verify the Reddit Post on Solar Energy
Exam
Calculate the total solar energy intercepted by the earth from the sun in one year based on the nominal figure of 1 kW per square meter.
