What do diamonds, sunglasses, high-end Lululemon sportswear and concrete have to do with climate change?
They can all be made using carbon dioxide, locking up the planet-warming gas. And tech startups behind these transformations are grabbing investor attention.
Some use bacteria. Some use proteins. Some use chemical processes to speed natural reactions. Most pull apart the carbon and the oxygen in carbon dioxide to create another chemical that is used to make consumers goods.