. >> ken rogofp is a professor at harvard university. the reason janet yellen's small move could have an impact on your bottom line. and donald trump is not back down. >> san bernardino, he was born here but she wasn't. >> i'm off the coast of hawaii. >> we are on the tipping point of an ecological disaster. >> this coral is not dead. >> techknow's team of experts show you how the miracles of science... >> this is what innovation looks like. >> can affect and surprise us. >> i feel like we're making an impact. >> let's do it. >> techknow - where technology meets humanity. >> we're back talking about the federal rirve' reserve's decision to raise rates one quarter%. my next guest says janet yellen has another reason to raise rates, so she can lower it plaimpt later. ecri successfully predicted down turns, good evening, good to see you. i asked ken rogoff about this, the likelihood of them needing the tool to have interest rates to lower is probably not too real but look at what's happened in europe. they've actually had to go into negativ

. >> ken rogofp is a professor at harvard university. the reason janet yellen's small move could have an impact on your bottom line. and donald trump is not back down. >> san bernardino, he was born here but she wasn't. >> the only live national news show at 11:00 eastern. >> we start with breaking news. >> let's take a closer look. >> every day is another chance to be strong. >> i can't get bent down because my family's lookin' at me. >> to rise, to fight and to not give up. >> you're gonna go to school, so you don't have to go war. >> hard earned pride. hard earned respect. hard earned future. >> we can not afford for one of us to lose a job. we're just a family that's trying to make it. >> a real look at the american dream. "hard earned". sunday, 10:00 eastern. only on al jazeera america. >> we're back talking about the federal rirve' reserve's decision to raise rates one quarter%. my next guest says janet yellen has another reason to raise rates, so she can lower it plaimpt later. ecri successfully predicted down turns, good evening,

. >> ken rogofp is a professor at harvard university. the reason janet yellen's small move could have an impact on your bottom line. and donald trump is not back down. >> san bernardino, he was born here but she wasn't. >> we're back talking about the federal rirve' reserve's decisio raise rates one quarter%. my next guest says janet yellen has another reason to raise rates, so she can lower it plaimplater. ecri successfully predicted down turns, good evening, good to see you. i asked ken rogoff about this, the likelihood of them needing the tool to have interest rates to lower is probably not too real but look at what's happened in europe. they've actually had to go into negative rates. >> i didn't think they would like if they didn't think a recession was on their doorstep. >> for fear to trigger it. >> to hasten to -- >> i like that idea. >> what you do if you bring up the appearance for example, they trieeuropeans frequent, now the. here ms. yellen said as much today and she said it in her minutes in past recent minutes that because