NPR Staff

Amazon owns 41 percent of all book sales and 67 percent of all e-book sales mainly because it offers lower prices. But the e-commerce company came under fire in late 2014 when Amazon and the publishing house Hachette faced off over who should set the price for e-books. The debate raises questions about Amazon's growing place in the market, the changing role of publishers and the value of books in our society.

Facing a Republican-controlled Congress in his sixth State of the Union speech, President Obama took credit Tuesday for an improving economy and focused on proposals aimed at advancing the middle class.

After years of recession and war, Obama claimed "the shadow of crisis has passed." In its place, he asserted, is a future marked by "a growing economy, shrinking deficits, bustling industry, and booming energy production."

Here's what Obama proposed on the policy front:

Economy

This past week, more than 2,000 mental health workers for the HMO health care giant Kaiser Permanente in California went on strike.

The strike was organized by the National Union of Healthcare Workers. The union says Kaiser Permanente patients have been the victims of "chronic failure to provide its members with timely, quality mental health care."

Google announced this week they're ending individual sales of the much celebrated, and maligned, Google Glass. And as we reported last week, a recent Fortune study found relatively low interest in wearable gadgets.

Today, the World Health Organization issued a 14-part report on Ebola, from the moment it started until now.

We asked our team of Ebola correspondents to look at the sections and pull out the points that seemed most interesting — that may have been overlooked or forgotten, stories that show how the virus turned into an epidemic.

Where it all began

Our current cultural obsession with food is undeniable. But, while the advent of the foodie may be a 21st century phenomenon, from an evolutionary standpoint, flavor has long helped define who we are as a species, a new book argues.

In Tasty: the Art and Science of What We Eat, Pulitzer Prize-winning journalist John McQuaid offers a broad and deep exploration of the human relationship to flavor.

"Flavor is the most important ingredient at the core of what we are. It created us," McQuaid writes.

The International Consumer Electronics Show has wrapped up its showcase of the latest in high-tech, from wearables to curved-screen phones to extremely high-definition 4K televisions.

But according to a survey from the magazine Fortune, many Americans have a simpler wish: better batteries.

Across the Hudson River in Newark, N.J., the murder rate is down, but the new mayor there says that's just a small step in a very long effort to make Newark a safer place to live.

The state of race relations in the United States has captivated the country for months. But a group of Northeastern University law students is looking to the past to a sometimes forgotten, violent part of American history.

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