The visible portion of the 13-foot-tall (4-meter-tall) "Christmas tree" isn't ancient, but its root system has been growing for 9,550 years, according to a team led by Leif Kullman, professor at Umeå University's department of ecology and environmental science in Sweden.
National Geographic
1
Climate Change | National Center for Science Education
Is Rick Perry a 21st-century Galileo?
Reaction to "Gathering Storm" U.S. science education report
Life Sciences - Virginia Commonwealth University