This Week in Science: Osteoarthritis Injections, Whale 'Speech', And Much More!

This week’s science roundup featured a slow-release joint injection that repaired cartilage and eased osteoarthritis in animals.

Researchers also found speech-like structure in sperm whale clicks and reported a rare case of long-term HIV remission after a sibling stem cell transplant.

Other findings included a large magma reservoir beneath Tuscany and an exceptionally pristine ancient star in the Milky Way.

A separate study linked higher vitamin D in midlife to fewer Alzheimer’s-related tau tangles, suggesting a possible dementia-risk signal.