Originally published on Mon October 8, 2012 3:28 pm
The two scientists who won this year's Nobel Prize in Physiology or Medicine discovered that cells in our body have the remarkable ability to reinvent themselves. They found that every cell in the human body, from our skin and bones to our heart and brain, can be coaxed into forming any other cell.
The ice covering the Arctic Ocean was at a record low, in keeping with a sharp warming trend in the far north. At the same time, the amount of the ocean around Antarctica covered by sea ice hit a record high. It's winter in Antarctica when it's summer in the Arctic. But why in a warming world is wintertime ice growing?
Originally published on Mon October 8, 2012 6:50 am
British researcher John Gurdon and Shinya Yamanaka of Japan have won this year's Nobel Prize in medicine or physiology. They won "for the discovery that mature cells can be reprogrammed to become pluripotent."
A small, fanged dinosaur called Pegomastax africanus was identified this week, more than half a century after its skeleton was dug up in South Africa. The dinosaur looked like a fierce cross between a chicken and a porcupine, and had long fangs which it used to eat plants and compete for mates. Pegomastax was a diminutive beast, standing less than two feet tall and weighing no more than a small house cat.
In California, state officials are planning a multibillion-dollar environmental restoration of the inland delta near San Francisco Bay. There's only one problem: No one knows what the landscape used to look like. Ninety-seven percent of the original wetlands are gone, so the state is turning to historians for help.
This detective story begins on a sunny day in a dry field of corn, about an hour east of San Francisco.
A recent study conducted at the University of Pennsylvania identified key molecules involved in forming long-term memories. Experts discuss how this is the latest in a growing field of research on how our bodies regulate our genes, and how this process affects our memories.