He says algae will be the most likely source for renewable energy in the future. Algae? The way energy use is skyrocketing, in time anything available will be used, corn, rice, wood, cotton. Over above any waste material any fossil fuels and nuclear energy. The problem is the escalation of energy use is beyond the capacity to produce it. Has it ever occurred to anyone that the biggest waste by product of energy use the way things are designed today, is HEAT. There should make more productive means of energy transformation developed. So much of the 'energy' that is produced as fuel burns to power an engine amongst other things, goes straight out the exhaust pipe, without performing any useful function. Like the way they use nuclear energy to boil water to make steam. after the medium is expanded through heating/combustion, it stays that way. Why? because we're too busy thinking about the next 5 minutes. The children, and grandchildren can worry about the future. If there is one.

Pop for the comment, pokkets.