There is some risk to increase birth defects if you do a lot of outdoor gardening when you are pregnant. That can increase rates of toxoplasmosis.

Being pregnant was a lot like being a child again. There was always someone telling you what to do.

I had always been told that you shouldn't clean the litter box when you're pregnant, because of your cat. And I think that is overblown - unless you have, like, three kittens in your house that are living outside and eating raw meat, this shouldn't really be a significant source of concern.

I tell my micro students everything I teach them is important, but the truth is that some things are more useful than others, and opportunity cost is near the top.

Even though it is the case that poverty is linked to AIDS, in the sense that Africa is poor and they have a lot of AIDS, it's not necessarily the case that improving poverty - at least in the short run, that improving exports and improving development - it's not necessarily the case that that's going to lead to a decline in HIV prevalence.

You work hard for your income, and that hard work is what fuels the economy.