Originally published on Mon January 27, 2014 9:36 am
Our four-legged friends suffer from many of the same cancers that we do. But one type of dog tumor acts like no other: It's contagious.
The tumor spreads from one pooch to another when the dogs have sex or even just touch or lick each other.
"It's a common disease in street dogs all around the world," says geneticist Elizabeth Murchison at the University of Cambridge. "People in the U.S. and U.K. haven't heard of it because it's found mostly in free-roaming dogs in developing countries."
The world's biggest trees, such as this large Scots pine in Spain's Sierra de Baza range, are also the world's fastest-growing trees, according to an analysis of 403 tree species spanning six continents.
Credit Asier Herrero / Nature
The General Sherman, a giant sequoia in California's Sequoia National Park, is more than 2,000 years old, and is thought to be the largest tree (by volume) in the world.
Like other animals and many living things, we humans grow when we're young and then stop growing once we mature. But trees, it turns out, are an exception to this general rule. In fact, scientists have discovered that trees grow faster the older they get.
Once trees reach a certain height, they do stop getting taller. So many foresters figured that tree growth — and girth — also slowed with age.
Originally published on Fri January 10, 2014 9:52 am
A 26-part series on genetically modified food was not Nathanael Johnson's idea. And he didn't realize it would take six months, either.
Last year, Johnson was hired as the new food writer for Grist, a website for environmental news and opinion. Grist's editor, Scott Rosenberg, was waiting with an assignment: Dig into the controversy over GMOs.
Ross Reynolds talks with double-RFID implantee and self-described DIY biohacker Amal Graafstra who runs a business called Dangerous Things that helps people implant RFID chips into their body to open doors, start motorcycles and log onto computers.
For years, museum conservators and paleontologists have yearned for a way to duplicate fragile fossils without damaging them. Now scientists with the University of Oregon say they have found a way to do just that, with the help of a relatively inexpensive 3-D printer.
Marcie Sillman interviews Patricia Kuhl about her new study on the benefits of “parent-ese," or baby talk. Kuhl is a professor and co-director of the Institute for Learning and Brain Sciences at the University of Washington.
For President Obama, 2013 wasn't just the year of Obamacare. It was also the year of the brain.
In April, Obama announced his Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative — an effort to unlock "the mystery of the three pounds of matter that sits between our ears."