Back in 1958, a young biologist at Cornell University made a stunning discovery.
He took a single cell from a carrot and then mixed it with some coconut milk. Days went by and the cell started dividing. Little roots formed. Stems started growing. Eventually, a whole new carrot plant rose up from the single cell.
Imagine if you could perform a similar feat with animal cells, even human cells.
Alabama's monster snowstorm that paralyzed cities and left motorists stranded on highways has given weather forecasters a lot to think about. Tuesday's weather outlook called for snow south of Interstate twenty, impacting cities like Montgomery, Selma, and Mobile. By mid-morning, snow was blanketing Tuscaloosa and Birmingham, prompting immediate traffic gridlock that turned into a weather emergency. Alabama Public Radio's Pat Duggins spoke with Renny Vandewege about it. He teaches broadcast meteorology at Mississippi State University.
From Governor Robert Bentley on down, the message is the same: stay off the roads. Many roads across the state are closed as icy conditions persist. State troopers say ice is likely to blame for three traffic fatalities yesterday and numerous accidents. Driving is very dangerous and many schools, businesses, and government offices are closed. Emergency personnel and road workers are stretched thin and so officials are urging patience. For a partial list of closings, click the link below.
Scientists have reconstructed the genetic code of a strain of bacteria that caused one of the most deadly pandemics in history nearly 1,500 years ago.
They did it by finding the skeletons of people killed by the plague and extracting DNA from traces of blood inside their teeth.
This plague struck in the year 541, under the reign of the Roman emperor Justinian, so it's usually called the Justinian plague. The emperor actually got sick himself but recovered. He was one of the lucky ones.
A remarkable transformation is underway in western North Dakota, where an oil boom is changing the state's fortunes and leaving once-sleepy towns bursting at the seams. In a series of stories, NPR is exploring the economic, social and environmental demands of this modern-day gold rush.
On a Sunday at dusk, Amtrak's eastbound Empire Builder train is jampacked, filled with people heading to their jobs in North Dakota towns like Minot, Williston and Watford City.
The Chinese flag is seen in front of a view of the moon at Beijing's Tiananmen Square in December, when China's first moon rover touched the lunar surface. That feat was widely celebrated — but observers believe the rover has now run into serious trouble.
Originally published on Tue January 28, 2014 12:55 pm
The clinical definition for when a child has some form of autism has been tightened. And these narrower criteria for autism spectrum disorder probably will reduce the number of kids who meet the new standard.
But researchers say the changes, which were rolled out last May, are likely to have a bigger effect on government statistics than on the care of the nation's children.
A winter storm could bring more than 2 inches of snow and sleet to parts of central Alabama early this week.
The National Weather Service has issued a winter storm watch for much of central and southern Alabama starting Tuesday morning. Forecasters say areas likely to see the most accumulation are those south of Interstate 85 and U.S. 80.
The Weather Service says more than 2 inches of snow and sleet are possible in cities including Montgomery, Auburn, Tuskegee and Selma. The heaviest snowfall is expected from noon Tuesday to 3 a.m. Wednesday.
The eastern Grand Canyon was about half-carved (to the level of the red cliffs above the hiker) from 15 million to 25 million years ago, an analysis published Sunday suggests. But the inner gorge was likely scooped out by the Colorado River in just the past 6 million years.
Credit Laura Crossey / University of New Mexico
Recent analyses suggest that this stretch of the Grand Canyon (Marble Canyon, near Cape Solitude) was beneath more than a mile of layered rock until 6 million years ago, when a mighty river came through and scooped it out.
In recent years geologists have hotly debated the age of the Grand Canyon. Some think it's young (just 6 million years old), while others argue that it dates back 70 million years — to the days of dinosaurs.
Now one group says the Grand Canyon is neither young nor old. Instead, these geologists say, it's both.