for the "pbs newshour," i'm julia griffin. >> woodruff: i'm not trying it, but i hopothers will. >> woodruffr online right now, what does it mean to be an enronmentally sustainable business? there's no one definition, and yet committing to greener practices are vital to the world's ability to contend with the climate crisis. are doing on our web site,anies pbs.org/newshour. and that's the newshour for tonight. i'm judy woodruff.ju join us on-line and agaihere tomorrow evening. for all of us at the pbs newshour, thank you and see you soon. >> major funding for the pbs wshour has been provided by: >> consumer cellular. >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and finaial literacy in the 21st century. >> supported by the john d. and catherine t. macarthur committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the going support of these institutions: >> this program was made possible by the corporation for and by contributions to your pbs station from viewers like you. thank yo