Wearing a traditional white coat and a surgical mask, “Doctor” Suelen da Silva uses a stethoscope to listen to her patient — a black doll that she is healing at her home on a hillside near Rio de Janeiro.

Methane leaks from the environment and human activity are a serious greenhouse gas problem. Methane is many times more effective than carbon dioxide at trapping heat, and scientists now say the Moon plays a key role in how much of the gas gets released.

Archeologists have uncovered the ruins of a marble structure during an excavation in Istanbul’s Kadıköy district on the Asian side. While the site’s architecture does not lend any clues to its function, archeologists believe it was considered a sacred place. Mass graves were also found during the excavations.

A long-lost Egyptian artifact has been found in a cigar box in Aberdeen, Scotland — and it is hoped it could shed new light on the Great Pyramid.