That’s the situation that faced authorities in Australia, as they scoured over a thousand kilometers of desert highway for a tiny missing radioactive source with the potential to cause serious harm.

“The Federal Highway Administration’s review must be a genuine effort to address the significant environmental harms this freeway would cause,” said Kate Hotten, co-executive director at the Coalition ...

From Nouakchott, the capital of Mauritania, a desert highway leads to the village of Idini, where the center is located. Upon entering, the harsh sandy landscape suddenly gives way to a scene full ...