Plate boundaries are where the action is. A large fraction of all earthquakes, volcanic eruptions, and mountain building occurs at plate boundaries. It is also where most of the people on Earth live.

Another invisible line is the Qinling-Huaihe line, which separates China into two distinct regions: the humid and subtropical south and the dry, temperate north.

Boundaries define your responsibilities in ... has trained them to contact you every time the need arises. It is human nature to pursue the path of least resistance. If you are viewed by others ...

It was critical to leave intact as much as possible of the subjective experience of viewing continuous activity, unbroken by experimental trials or other externally imposed boundaries. However ...

Through Todd’s lens we explore the human condition in nature and the life imperatives we have in common with the natural world. To the Ends of the Earth: The Natural World - Pushing Boundaries ...

More information: M. O. Cuthbert et al, Concerns regarding proposed groundwater Earth system boundary, Nature (2024). DOI: 10.1038/s41586-024-08082-9 ...