These are the words spoken by the character in the promo video;
My name is Esther Drummond, I have a BA in Linguistics from Brown with a second to Nature and Computer Science. Masters is in Cognitive Science from the University of Chicago –
I tried to stop them, okay. And everything changed. I thought it was wonderful; I thought … I thought we could live forever. But I was such an idiot. I thought Torchwood could help. The Miracle was just the start. There’s nothing we can do.
Source [Doctor Who News]