Natural history
págs. 2-4
Diana's Mountain Retreat: Named for the Roman goddess of woodlands, a singular butterfly survives in a shrinking habitat.
págs. 24-72
Inside the Code: Our DNA contains layers of "extra" information that constrains the direction evolution can take.
págs. 31-34
On swift wings: What airplane designers could learn from the shape-changing wings of birds.
Adam Summers, Jacqueline Mahannah (il.)
págs. 42-43
That great beast of a town: In the 1770s, London became the epicenter for a great intellectual quest: discovering the incredible diversity of life on Earth.
págs. 44-49
Art for the Ages: New murals offer a glimpse of the Pacific Coast's extinct ecosystems
págs. 50-54
No taming the shrew: Good thing for us it's small, because this predator gives no quarter to its quarry.
págs. 56-60
Wetted bliss: In a Louisiana refuge, different degrees of moisture create distinctive woods.
págs. 62-63
Strength in numbers: If you want to build a planet, you'd best begin with big bunches of boulders.
págs. 70-71
pág. 80
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