MAYBE some researchers here would be wise to follow up on this...

[future pather]

I just heard the statistic that 70% of our oxygen comes from algae. Also that it's being threatened by climate change.

Optimum, YES

[Stealth]

Going Green

Actually, all vegetation produce oxygen, with trees producing more than any other. They all use sunlight and water to convert to oxygen and hydrogen. They all use photosynthesis to break down water into it's two basic elements. They are the most efficient systems we know of at using low amounts of power to break down water. If we could somehow replicate what nature does naturally to seperate the basic elements in water, we could have all the needed energy to power our world without using fossil fuels of any kind, except as lubrication. We could clean up the environment, and plant more trees to produce more oxygen for the environment, making the earth more friendly to man and beast. Algae has a place in the future for sure, but using hydrogen and oxygen efficently could produce far more power, with water as a byproduct. Good Luck. Stealth

[future pather]

Actually, all vegetation produce oxygen, with trees producing more than any other.

Yes I think it's common knowledge that plants produce oxygen, so no arguments there but sorry I think you're wrong about the part about trees producing more than any other:

We need marine algae a whole lot more than they need us. Think about it….70% to 80% of all the oxygen we breathe comes from algae!

ecology.com | Algae; The Most Important Organism?

[Stealth]

Algae

I read the link. It is interesting and probably true. Both are essential and vital to our existence. Good Luck. Stealth