NPR News

There's a world of activity between when online shoppers click the "place order" button and when a holiday package is delivered to their doorsteps. The National Retail Federation estimates that 38 percent of holiday purchases will be made online this year, which is keeping fulfillment centers large and small very busy.

Target.com runs five fulfillment centers. One of them, in Tucson, Ariz., stretches the length of 16 football fields.

A group of chemists have presented what they say is self-cleaning fabric that could one day lead to jeans, shirts and other clothing that dissolves stains and kills bacteria when exposed to sunlight.

The scientists announced their findings in the journal ACS Applied Materials & Interfaces, which is peer-reviewed and published by the American Chemical Society.

If you're unemployed, it can be painfully clear when you don't have the right skills to land a good job.

With unemployment at 8.6 percent, upwards of 13 million Americans are without a job and looking for work. A recent NPR/Kaiser Family Foundation poll surveyed thousands of unemployed and underemployed people, asking whether they thought they had the skills required to find a job.

Federal money for active duty students is particularly attractive to for-profit schools, which have been signing up members of the services in record numbers.

So, the Pentagon has developed new rules to ensure that service members are treated fairly when they use government money to attend college. Those rules are set to go into effect Jan. 1, but many of the nation's best-known schools say they cannot accept those requirements.

The dispute puts at risk millions of dollars in federal assistance.