Unraveling the Mysteries of Sinking Cities and the Tree of Life.

This week in science news, New York City's buildings are causing the city to sink, a massive long-necked titanosaur was discovered in Argentina, and scientists are pondering whether octopuses have nightmares and if there is such a thing as a "dark matter star". An extremely rare albino echidna was spotted in Australia, and the James Webb Space Telescope discovered a geyser on Saturn's moon Enceladus that could contain chemical ingredients for life.