Crisp, accurate line renderings of 46 species from tropical habitats around the world include the green-tailed sylph, bird of paradise, scarlet ibis, rhinoceros hornbill, Mandarin duck, regal sunbird,
Forty-five colorable illustrations of 100 shells, all shown in full color on covers: spider conches, Atlantic Bay scallops, jackknife clams, fig shells, white-edged augurs, flamingo tongues, emperor's
Far from the city, millions of starts are visible in the night sky. But these beautiful, twinkling lights are really giant balls of fusing gas that lie millions and millions of miles away and formed
The Adelie penguin is one of the best-studied birds in the world and is the subject of research programs from a dozen nations interested in monitoring changes in the environment and the food webs of t
