What happens when young sea otter pups are orphaned? In a California aquarium, a nurturing sea otter fills the void, teaching the pups how to care for themselves. A remarkable true story that will especially please young animal lovers.

A brilliant mathematician who worked at NASA in the early 1950s until retiring in 1986, Johnson's unparalleled calculations (done by hand) helped plan the trajectories for NASA's Mercury and Apollo missions. A special section includes extras on subjects like history and math, plus inspiring careers for math lovers. Full color.