Why are there so many perfectly round boulders in this national park located in Argentina?

Another three-country border: You can decide if you want to have a picknick in Finland, Sweden or Norway.

What Is the cause of these unusual desert patterns in the southern UAE near the Oman boarder?

Can someone tell me the reason for this vertical hook?

Why does the North American East coast have a much larger continental shelf than in the West?

Convention on Cluster Munitions Ratifiers in Purple

Signatories: Blue Ratifiers: Purple Accessions: Pink

Is there a term for a semi-enclosed body of water attached to a river? (Pic for reference of what I’m talking about)

What would the climate, or way of life be today if the Appalachian mountains retained their the ancient heights. Similar to the Himalayans.

Why the west of the us have fewer countys?

The Sargasso Sea is the only sea in the world without a coast, instead bound by the North Atlantic current on the north, the Canary Current on the east, the North Atlantic Equatorial Current to the south, and the Gulf Stream to the West. It is frankly a disgrace to other seas that earned that title.

Mapping Humanity's average temperature : how close do you live to the average ? [OC]