Earlier, Republican presidential candidate Mitt Romney blamed what he said have been President Obama's "failed" economic policies for the nation's stubbornly high unemployment rate and weak job growth.
In Minnesota this hour, President Obama conceded "we've got a lot of work to do before we get to where we need to be," but also claimed credit for policies that he said prevented another Great Depression after the financial crisis of 2008.
The board of the Leadership Conference of Women Religious (LCWR), which represents most nuns in the United States, rejected a report from the Vatican that found they were running afoul of church doctrine.
The report, which among other things expressed concerned about the group's "radical feminism," was issued in April and ruled that an American archbishop would bring the nuns back in line.
Reporting in Science, researchers write that a combination of therapies, willpower and chocolate helped rats with severe spinal cord injuries learn to walk and even run again. Neurobiologist Moses Chao, not affiliated with the study, discusses the rehab method and whether it could work in humans.
People looking at the scientific world from the outside often see it as one dominated by facts, where scientists use a stepwise, systematic process that begins - you know, you learned all this stuff in grade school, a hypothesis, the collection of data, of observations, blah, blah, blah, you go through all these steps.
Scientists at the University of Leeds are exploring ways to use magnetic bacteria to build biocomputers of the future. Meanwhile, another group of researchers, reporting in Science, write that they have unearthed deep-sea microbe that live off nutrients from the dinosaur age.