Nearly 10 percent of U.S. bridges are considered structurally deficient.
Leave wildlife rescue to the people with rabies vaccinations.
And more of our favorite images of the week
Longest-lasting lightning bolt also measured
The first color photo of Pluto, a warm-blooded fish, and much more
Including a robot hugging a teddy bear
Plus, an ant's shiny coat keeps it cool
We've rounded up 2014's most mind-blowing images for your viewing pleasure
Important things from September 1964
Wolves have been devastated by inbreeding.
PopSci thought experiment: If we were to make a famous building today, what would we do differently? Two architects and a civil engineer weigh in.
On the Labrador Sea, the scientific crew of the research vessel Knorr hunts for underwater storms, sinks a two-mile mooring--and gathers clues to the planet's fate
An Interview with Rev. Dr. John Polkinghorne, author of the new book, Questions of Truth: Fifty-One Responses to Questions about God, Science, and Belief
Western architects have grand plans for helping China solve its expanding environmental crisis. But the world's dirtiest country already has the power to clean up all on its own
Meet the extraordinary scientists whose innovations are bringing us robot cars, new cures and vaccines, the fastest-ever computer animations, and much, much more
The world's longest suspension bridge.
The world's tallest building
Tallest building! Longest bridge! Fastest train! Behold, the next engineering marvels to dazzle the world.
Here's hoping this month's release of the Hollywood sea-fighting epic Master and Commander will do justice to those magnificent men and their sailing machines. On these pages, the mightiest ships of then and now.
9/11 fanned fears of more terror attacks by air. But our 95,000 miles of coast may be much more permeable. Here's the new defense strategy.
What's it take to pilot a floating city? Our man reports from the (simulated) bridge.
Engineering: A design by da Vinci bridges 500 years.