The iconic singer – who was adopted at a young age by shop owners Richard and Catherine Harry – has never had children but did occasionally think about the idea of expanding her family.
She said: "I've thought of adoption, which I think I'd be really good at. Now that this terrible earthquake has happened in Japan, there will be lots of children needing homes."
The 65-year-old pop star likes to support various charities, and the eco-conscious celebrity would like to set up a foundation to promote the use of solar panels.
She said: "I spread myself around a lot of causes.
"I'm concerned about the environment and clean water and being carbon-free. I also support diabetes research.
"If I were to do a foundation it would be to promote solar energy. And I'm worried about drilling for oil. I think it is harming the earth, because it drains the layer of oil under the surface, and that could be causing earthquakes.
"It's like we're giving the earth arthritis. I don't know if that sounds crazy."
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