House Proud
High design in a factory-made home? Michelle Kaufmann believes she holds the key
End of the Road?
Development threatens to block the migration of pronghorn antelopes. Without new protections, conservationists say, the animals are running out of time
The Shadow Knows
Why a leading expert on the history of timekeeping set out to create a sundial unlike anything the world has ever seen
Beyond Time
A unique sundial marks places as well as hours
Paleozoic Vermont
What’s the world’s oldest communal ocean reef doing in the Green Mountain State?
Wild Things: Life as We Know It
Tree frogs, conservation maps and the northern swordtail fish
The Tattoo Eraser
A new type of body art ink promises freedom from forever
Diamonds Unearthed
Smithsonian diamond expert Jeffrey Post discusses conflict diamonds, colored diamonds and synthetic gems grown in the lab
Time for a Change
One professor’s mission to revise the calendar
Diamonds Unearthed
In the final installment of this three-part series, diamond expert Jeffrey Post discusses the histories behind the Smithsonian collection
Wild Things: Life as We Know It
Parasitic plants, zebra tarantulas and wobbles in Earth’s orbit
Interview: Margaret Lowman
Bugs in trees and kids in labs get their due in a new book by “Canopy Meg”
Beard’s Eye View
When elephants began dying, Peter Beard suspected that poachers were not entirely to blame
Mirror Image
The first evidence that elephants can recognize themselves
Old World, High Tech
An ancient Greek calendar was ahead of its time
Clues from a Comet
The first mission to collect space matter from beyond the moon offers insights into the solar system’s creation
Diamonds Unearthed
In the first installment of a multi-part series, Smithsonian diamond expert Jeffrey Post explains how the rare crystals form
It All Falls Down
A plummeting cougar population alters the ecosystem at Zion National Park
Unwelcome Guests
A new strategy to curb the spread of gypsy moths
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