Rose Byrne survived the apocalypse in 28 Weeks Later. Now, she’s trying to avoid another one with co-star Nicolas Cage in Knowing. Rose takes questions exclusively for users of

Q: Now in Knowing, the end of the world is predicted in a message. Do you believe that one person could have that kind of knowledge? - Stuart, London

I don’t personally believe that, no. Since the beginning of time there have been prophesies in numbers–they are a dime and dozen, really–and that’s what they say in the movie. I guess I sort of believe that. I believe that the environment is in huge danger. I trust scientist more than anyone else. If that isn’t dealt with, then obviously the world is going to change indefinitely.

Q: With Knowing and 28 Weeks Later, you’ve been in a couple of apocalyptic movies. Do you ever worry that the end is near? - Stuart, London

Yeah, I definitely do. I'm pretty practical in the sense of the carbon footprint of humanity and those sorts of things and of the damage that we’ve already done. I remember being in England and there was this huge fear that bird flu was going to break out–this kind of flu that was from ducks and geese–they were saying was going to wipe out England a few years ago. But, you know, it’s a real possibility it’s like the Bubonic Plague, it could happen again. All you can do is try to live your life as cleanly honestly and critically aware of how you treat the Earth and each other.

Q: What was your most memorable moment working with Nicolas Cage in Knowing? - Vladimir, New York - Uinterview User

I think the scene where he confronts me. We shot this scene on top of a deck in the middle of Melbourne and we had rehearsed it in a certain way but Nicolas just threw me a really crazy curveball and tried to do the scene in another way. It's really between actors but it was really exciting because it was spontaneous and instinctual and it kept me on my toes. It wasn't by the numbers at all, not to make a bad joke about the movie, but for me that was probably my most memorable experience working with Nicolas.

Q: What was the most difficult scene for you to shoot and why? - Vladimir, New York - Uinterview User

The scene where my daughter and his son are taken away in the car, unbeknownst to me because I'm hysterical on the phone talking to Nicolas' character. That scene was very traumatic because any mother losing a child is so horrendous and it was shot in the middle of the night and it was freezing so the environment was really uncomfortable as well. But that was probably the hardest cause if you're really doing that properly it's pretty devastating.