Laptop Radiation (?)

I sometimes sit with my laptop on my lap. Dad told me not to do that because the laptop radiation causes infertility. "Baka di ka na magkaanak nyan", he said.

Do you think he's right? Do laptops have radiation in the first place?

I made some research:
Yahoo! Answer
Baby Center

And most of them say, no. There's nothing to worry but it's always better to play it safe.