By The Associated Press Cited from endi.com The National Academy of Sciences said today that “recent (Earth’s) warming has no precedents in the last 400 years and probably the last millennia”. These conclusions were included in a document that reflects a wide revision of scientific information requested by Congress. A panel of renowned scientists told legislators that the Earth is warming and that “human activity is responsible for most of the recent warming”. The 155-page panel report indicated that the average temperature of the surface of the Northern Hemisphere increased one degree Fahrenheit (approximately half a centigrade) during the XX century. Warming is reflected on glacier melting and other nature’s evidence, said Gerald North, geosciences professor in Texas A&M University, who chaired the panel of experts. The report was requested by Sherwood Boehlert , republican legislator and president of the Scientific Committee of the House of Representatives, which emphasized the importance of scientists advising the Congress. “There is nothing in this report that may cause doubt about the overwhelming consensus in the scientific community about global climatic change”, he sustained. Other new investigations released today demonstrated that global warming was responsible for approximately half of the warming of the north Atlantic in 2005 due to hurricane activity, and natural cycles were a minor factor, according to Kevin Trenberth and Dennis Shea, from the National Center of Atmospheric Research. Government of President George W. Bush has insisted that the is not a severe enough threat to set new pollution standards, that according to The White House would cost around 5 million jobs. Scientists Michael Mann, Raymond Bradley and Malcolm Hughes have said before that Earth was on its hottest level in 2,000 years. The panel of the National Academy concluded that the Mann-Bradley-Hughes research of late nineties was “probably” true, said John “Mike” Wallace, professor of atmospheric sciences of Washington University and a member of the panel. The conclusions of the 90’s investigation, “are really close to being correct” and are supported by the most recent information, Wallace said.