A colourful photo of an olive tree surrounded by tulips has beaten thousands of entries from around the world to win the Royal Horticultural Society's annual photographic competition. Josie Elias ...

An image of an olive tree surrounded by tulips has beaten thousands of entries from around the world to win the Royal Horticultural Society's annual photographic competition. Other top pictures ...

Olive tree farmers assemble in Veglie, near Lecce, for an informational event about Xylella on October 14, 2016. Photograph by Patricia Kühfuss In the Melcarne's bottling plant, everything is ...

Olive voted as national tree to mark Tu Bishvat With arbor ardor running high, tens of thousands of Israelis choose symbol of peace in KKL-JNF survey, helping it beat out Tabor, palm and lowly fig ...

Olive trees are generally understudied as a result, said Peter M. Brown, the director of Rocky Mountain Tree-Ring Research, who was not involved in the new study.