kristy. >>> it is a big day at the maryland zoo in baltimore. thanks to cbs echo media elephant insurance services and wjz tv. some new energy-efficient lighting has been installed. rons more on a brighter day for giraffes at the zoo. >> everyone loves the giraffes at the maryland zoo. they're 16 feet tall. but their home is nearly 50 feet old. he told me a makeover is under way. >> we put about $150,000 in the giraffe house a year ago. but we didn't have enough money to address some of the lighting issues that we've had. [ applause ] >> reporter: that's changed with the cutting of a green ribbon, celebrating the installation of new energy- efficient l.e.d. lighting. >> this is providing better illumination, providing a better living situation for the giraffe, and it's saving the zoo money. >> reporter: the public-private partnership includes wjz, elephant insurance, and cbs ecomedia. >> we're investing all the time, trying to attract customers. and we can take a piece of that and give it back to the community. and this particular is giving it back to the maryland zoo. >> how are you doing, bud? >> with 18-inch tongues. they eat a lot. >> on a daily basis, he receive