Like hippos, their closest living relatives, whales are descended from an ancestor that had four legs and walked on land, a transition explored in the upcoming exhibition Whales: Giants of the Deep, opening March 23.

This spring, as the Museum celebrates the 10-year anniversary of the Irma and Paul Milstein Family Hall of Ocean Life, visitors can be transported to remote South Pacific coral reefs, the Cocos Island off Costa Rica, and other fascinating destinations as part of this season’s Milstein Science Series.

A new study, by researchers including the Museum's John Ascher, shows that although certain bumble bees are at risk, other bee species in the northeastern United States persisted across a 140-year period despite expanding human populations and changing land use.

Few beverages have as rich a history as bitters, the herbal-flavored spirit that was once marketed as medicine but is better known today as an ingredient in cocktails. In this podcast, Brad Thomas Parsons, author of “Bitters: A Spirited History of a Classic Cure-All,” discusses the history of the elixir from its earliest “snake oil” days to its rise as an essential ingredient in the contemporary bar scene.

Visit the David H. Koch Dinosaur Wing on the Museum's fourth floor, and you'll find a bevy of fossil dinosaurs, in two separate halls. One is the Hall of Ornithischian Dinosaurs (Or-nuh-THISH-ee-an); the other is the Hall of Saurischian Dinosaurs (Sawr-ISH-ee-an). A video explains the difference.