Researchers report an unexplained signal from measurements taken in a gold mine, reviving interest in whether dark matter could be involved. The result is being treated as a tantalizing anomaly rather than a confirmed breakthrough, but it adds fresh momentum to efforts to explain one of physics’ most persistent unanswered questions.

Jessica Meir of NASA and Sophie Adenot of the European Space Agency carry out the sixth all-female spacewalk outside the International Space Station on Sept. 1. The mission marks another rare milestone in human spaceflight and highlights the continuing role of women in high-profile orbital operations.

Researchers working off the Hamptons catch sharks, fit them with small tracking devices and record field data to map how the animals move near New York beaches. The work is part of a broader marine research effort aimed at understanding local shark populations and how they use coastal waters.

Air Vice Marshal Shakti Sharma becomes the first woman from a non-medical branch of the Indian Air Force to reach the rank of Air Vice Marshal or its equivalent in the Indian defence services. She is set to assume duties at Air Headquarters on Sept. 1, marking a notable institutional milestone.

The Society of Professional Journalists is updating its Code of Ethics for the AI era, revising guidance that was last overhauled in 2014. The voluntary framework has long shaped newsroom standards, and the new effort reflects how artificial intelligence is changing reporting, verification and professional decision-making.