This is SCIENCE FRIDAY. I'm Ira Flatow. If you have trouble sleeping, your doctor might send you to a sleep lab and spend $3,000 a night to chart your sleep cycle, or you could do the same thing at home with a commercially available headband, which wirelessly transmits your sleep data to your smartphone for under 100 bucks.
And now for our Video Pick of the Week. Flora's still here and positioned perfectly to take us on a safari.
FLORA LICHTMAN, BYLINE: We're still on safari.
FLATOW: We're still on safari.
LICHTMAN: The safari continues, this time to slightly larger organisms. See if you can see with your naked eye, and maybe in your own backyard. These guys are glow-in-the-dark - I have you already, don't I?
LICHTMAN: Millipedes - which, I didn't know - let me - can I tell you the story of how this came about?
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.