Yes it's true. A company name Sapphire Energy just announced they've managed to produce 91 octane from nothing but algae and CO2. The algae take in CO2 and spit out waste that can be processed into gasoline.
So what does this mean? In the short term nothing since the process is way too expensive to be viable. In the long term I hope people don't look at this and think it's a solve because ultimately we'll just put more CO2 in the air which would require more algae to process it and pretty soon, we'll be living in a hot ass planet bathed in autotrophic organisms.
I'd say this is pretty awesome news. As long as people have enough sense to use it in moderation, which people hardly ever do.
CO2 does not cause global warming. It's an effect of global warming.