enforced? ifill: those are some of the stories we re covering on tonight s pbs newshour. major funding for the pbs newshour has been provided by: moving our economy for 160 years. bnsf, the engine that connects us. supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org and with the ongoing support of these institutions and. this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. woodruff: the announcement from beijing today captured the attention of scientists diplomats and lawmakers alike. china and the united states agreed on a fast-track effort to pump less carbon into the atmosphere. this is an ambitious goal but it is an achievable goal. wooduff: it was an unprecedented announcement from the world s two biggest economies, and carbon polluters. president
enforced? ifill: those are some of the stories we re covering on tonight s pbs newshour. major funding for the pbs newshour has been provided by: moving our economy for 160 years. bnsf, the engine that connects us. supported by the john d. and catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org and with the ongoing support of these institutions and. this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. woodruff: the announcement from beijing today captured the attention of scientists, diplomats and lawmakers alike. china and the united states agreed on a fast-track effort to pump less carbon into the atmosphere. this is an ambitious goal but it is an achievable goal. wooduff: it was an unprecedented announcement from the world s two biggest economies, and carbon polluters. president o