"Oh, you're talking about that," Sally said cheerfully. "I don't regret it. Have I told you about my idol?"

"Yes," Vivian said, "I remember you telling me. Madame Curie, the first female recipient of the Nobel Prize in Chemistry."

"Yes, that's her greatness. It's just a pity that the experimental environment at that time was so harsh; that the protective measures were not as complete as they are now. Due to her long-term research on radioactive substances, she was exposed to ...