Submitted by Anonymous on Sun, 04/15/2012 - 16:30

Hi Mr. Wood, This is Yilinda Li from per.1

The answer to April 14 journal: Q: Can scientists really study something in nature without changing it? A: No, because if scienctists change it will be hard for them to make observations. Good luck on everything!!!!! :)

John Wood

Thank you for your very good answer.Thanks,
Mr. Wood