In Romans 11, St. Paul draws on the olive tree to warn gentiles not to “boast” or be “arrogant” in sharing “in the rich root of the olive tree,” that is, Israel (Romans 11:17).

The experiments, carried out by Penadés and guided by Solanki, led to many technical challenges due to the dense and irregular nature of olive tree roots. 'Unlike trunks, which grow upwards in a ...