Air plants bloom only once, their small pink, coral, purple or white flowers signaling their impending death. But no worries: ...

Both men strongly believe replenishing threatened oak trees can help the earth in many ways. "We are taking carbon dioxide out of the air. Oaks do that better than any other plant," said Jim.

When it comes to cleaning the carbon dioxide in the air, this plant is a clear winner than many other options. This maple tree can absorb five tons of CO2 within 30 years. Turkey Oak plant This is ...