May 15 (Reuters) - The baobab tree is a distinctive sight on the landscape. When its contorted branches are leafless during the dry season, they resemble jumbled roots emanating from a thick trunk, ...

The toilet brushlike specimen from a Canadian quarry hints at the evolutionary experiments that occurred during a 15-million-year gap in the fossil record. A 352-million-year-old fossilized tree, ...

Like hospital patients, the vital signs of 61 of the trees are measured, including sap and carbon dioxide flow, respiration ...