Researchers have recently learnt of, though not necessarily solved, new mysteries about trees. Who could have thought that they tend to sleep at night?
A recent paper published in the journal Ecology looks at a peculiar trait in Cook pines (Araucaria columnaris). On average, they tilt by 8.55 degrees, which happens to be twice as much as the Leaning Tower of Pisa does.
What is more, of the 256 Cook pines examined, all tilted towards the Equator.