Since this was obviously false, many scientists protested. However, Mann initially refused to reveal any of his data or methods - even though his work was supported by the U.S. government - which made it exceedingly difficult for other scientists to replicate his work. | Since this was obviously false, many scientists protested. However, Mann initially refused to reveal any of his data or methods - even though his work was supported by the U.S. government - which made it exceedingly difficult for other scientists to replicate his work. |