Pork producers across the country are grappling with a virus that's going after piglets. Livestock economists estimate the porcine epidemic diarrhea, or PED, virus has already killed about 1 million baby pigs in the U.S. since it was first found in Iowa last spring.
Canada reported its first case Thursday, and the disease shows no sign of abating. That has veterinarians worried.
Originally published on Sat January 25, 2014 6:44 am
One of the biggest earthquakes in U.S. history didn't occur in California. Or Alaska. It happened in the country's midsection some 200 years ago in an area where today seven states straddle the Mississippi River Valley.
And seismologists from the United States Geological Survey believe they've uncovered evidence that the New Madrid Seismic Zone, as the area that spawned the 1811-12 quakes is known, is still alive and kicking.
Scientists announced this week that they have created the most advanced clock in the world.
The clock, described this week in the journal Nature, is so precise that it would neither lose nor gain one second in about 5 billion years of continuous operation. That's pretty good, considering that the Earth itself is only around 4.5 billion years old.