This week's science news: A key Atlantic current is nearing its end, the world's largest iceberg breaks apart, and a mouse brain is redefining neuroscience.

In this week's Science Spotlight, we discuss alarming predictions about a major Atlantic current, the breakup of the planet's largest iceberg, breakthrough discoveries in the study of mammalian brains, and the James Webb Space Telescope's search for extraterrestrial life. (Image:…





