Foil Hypothesis Posted on October 25, 2012 by npstar Reply Keeping leaves green requires lots of energy from the tree. Our Student Scientistshttp://www.youtube.com/watch?v=Or4TcgcJrmE&feature=plcpl
One Last Harvest Posted on October 11, 2012 by npstar Reply http://www.youtube.com/watch?v=N1kDSDXl554&feature=youtu.be