also today, san francisco's mayor, ed lee unveiled the 0 to 100 campaign. e energy available for homes and businesses at some point in the future. the mayor also announced millions of dollars for new electric trolley buses, and biodiesel hybrid buses. >>> ktvu.com has a complete earth day section. look for the link right on the front page. >> this earth day comes in the middle of an unprecedented drought in california. but because many people don't have water readers, many people don't have a financial incentive to conserve. >> reporter: you'd be surprised that there are many people, if you live in an apartment, they don't have a water meter, so people don't know how much water they're using. a bay area senator wants to change that by requiring all newly constructed buildings to have a water meter so each tenant knows how much water they're using. like many californians, darren lives in an apartment. he says he loves to do his part to conserve water, but the only problem is, he doesn't know how much water he uses, because he doesn't get a bill. >> no, i don'

. >> reporter: mayor ed lee also unveiled the new zero 50, 100 campaign. sending zero waste to landfills, maintain 50% for transit use around the city, excluding cars and have 100% of renewable energy available for residents of san francisco and possibly the businesses here as well. >> david stevenson in san francisco, thank you. >>> on www.ktvu.com you will find more on earth day 2015, including tips on how you can help the environment. youwill find a link at the top of police. >>> thank you to police that went viral and now officers have a message. >> thank you. thank you. >> the letter that moved one officer to tears. >> facebook's new attempt to get people talking and why it is not available for iphone users. >> temperatures warmed up today. fog at the coast but it is clear, more warmth and in the 5 day a chance for showers. >> a look at the wednesday evening commute. a live picture of the bay bridge toll plaza. there is a lot of traffic heading into san francisco. giants taking on the dodgers at at&t park. first pitch is 7:15 p.m. >> interstate 280 in

the same time i get to learn and have fun. >> reporter: mayor ed lee joined school children to plant a tree. earlier at at&t park he unveiled the new zero 50100 campaign. it sames to -- 50, 100 campaign. >> earlier this year i announced our reduced green house gas emissions, 23% below the 1990 levels. that is something to elbrate. >> the giants -- celebrates. >> the giants are asking to keep the stands clean to cut down on power washes. >> 4,000 pounds of peanut shells were found on -- in the remnants of the 41,000 that were here and they are all going going to be compostable. >> reporter: governor jerry brown said the state will aim to reduce petroleum use in the next 15 years. at 6:00 p.m. the new plan unveiled in san francisco. >> from patrol tape-- petroleum to peanut shells. >>> an act of kindness went viral. see what happened when police officers connected with the woman who wrote it. >> i don't know how to say thank you. thank you. >> and did a dooroon plane open -- door on a plane open midnight, how the airline and the faa don't agree on what happened. >> and the technology to have a green lawn without using too muc