MLB Earth Day: Astros, Giants, Mariners

Today is Earth Day so I'm starting a new category: green.

The Astros are giving away canvas shopping bags and green caps today (players will wear the same). The SFGiants are not home today but everyone already knows they're the first team with a solar-powered scoreboard, right? Plus, they gave away reusable shopping bags last week.

And the Mariners are going Carbon-Neutral today (which means they will offset the global-warming impact of energy used at Safeco Field during the game).

MLB Global Warming Impacts Include:

*Emissions associated with electricity and natural gas used to operate the ballparks.
* Disposal or recycling of waste generated during the game.
* Air travel emissions for both teams and umpires for the game.
* Hotel-related emissions visiting teams and the umpires.
* Ground travel to and from the ballpark by staff and fans.

Are other teams dropping the ball here or are their plans a secret?