Algae is a highly-effective alternative energy that does not require the seismic activity of drilling or fracking. In fact, it can actually remove excess CO2 from an environment, as CO2 is the "food" it needs to accelerate production of fuel.
In 2014, engineers at the Department of Energy‘s Pacific Northwest National Laboratory "[devised] a way to turn algae into crude oil in less than an hour. That oil can then be refined into gasoline that can run engines."
Algae converts CO2 into triacylglycerol and can break down into a sludgy form of organic crude material (biomass), that can then be further broken down, chemically converted into ethanol and biofuel.
"Well, it is a basically simple process that uses temperature, pressure, and time to accomplish the chemical conversions ... A lot of people think of fossil fuels as, you know, dinosaurs and giant ferns and things. There is some of that, but the bulk of the organic matter was algae. Gradually the organic matter converts into slightly different forms, which make up the material that comes out as crude oil or natural gas.”