The Well of Barhout in Yemen is millions of years old, nobody knows how it formed, and now cavers have reached the floor for the first time.
Scientists are prepping for a future manned mission to Mars by spending four weeks in Oman's desert.
"Northern Ireland pulled out all the stops" – How Arlene Foster helped export Northern Irish policing expertise to authoritarian regimes.
Hoodfar had been imprisoned for more than 100 days.
As a chaotic civil war between rival governments and militias has raged in Libya, the country's marginalized Ibadis have reasserted themselves in the post-Qaddafi era. But they also have some new concerns.
Military commanders reacted to an infamous detainee hunger strike and subsequent raid at Guantanamo with disdain and resentment, emails obtained by VICE News show.
In the Obama administration's largest-ever single transfer of prisoners from the Guantanamo detention facility, 10 men were sent to Oman late Wednesday.
For trans people, airport confrontations are more than embarrassing, they can also be incredibly physically threatening.
The White House confirmed that two US citizens held in Yemen have arrived in Oman, but a third American is reportedly still being held.
At least 20 Indian nationals were reportedly killed on Tuesday while trying to smuggle fuel from Djibouti past the Saudi-led blockade of Yemen.
Isabelle Prime was freed Thursday and returned to France after she was abducted in February by an unknown group in Yemen while working on a development project.
The detainees sent to Oman on Friday have all been cleared for release for years and have never been charged with a crime.