17:28
A Squishy Border Dispute, Deep Below Texas And Mexico
The waters of the Rio Grande are closely regulated. But what about the water hidden in aquifers deep below the Mexico-Texas border?
7:38
After A Bridge Collapse, Questions About Engineering Safety
A sudden bridge collapse in Italy has sparked interest in the safety of structures worldwide.
4:18
Traffic Poses A New Threat To Yosemite’s Famous Bears
Bear sightings at Yosemite National Park are down, but the park’s infamous traffic poses a new threat.
24:46
Can We Outbuild Future Coastal Flooding?
The Army Corps of Engineers is investigating sea gates and other barriers to protect New York from a future Sandy. But others have doubts.
The Man Who Builds Beaches
In this excerpt from “The World in a Grain,” beach sand is gold. Illegal sand mining and rising seas are shrinking beaches, but this man is working to replenish them.
3:55
After New Jersey Floods, Rebuild Or Retreat?
Instead of rebuilding after repeated flooding, New Jersey is offering some homeowners a buyout.
4:56
Onetime Miracle Ingredient, Now An Environmental Problem
States across the country are holding public hearings on what to do about contamination with a class of persistent chemicals known as PFAS.
7:06
The Scientific Strategy Of Soccer Dives
It’s all about the dynamics of risk and reward.
7:42
What Are The Economics Of Immigration?
New research finds migrants and refugees boost the economies of countries they come to within just two years.
4:50
Marine Habitats Are Protected—But Are They Effective?
Ten percent of the world’s oceans are on track to be protected by 2020. But do they need to be?