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Henry Wood Elliott comments on walruses on Punuk Island in 1874, from his book Our Arctic Province.

What Does It Take To Map A Walrus Hangout? 160 Years And A Lot Of Help

Groups of walruses are vulnerable to disturbances, but it's hard to avoid them if you don't know where they are. A new tool from U.S. and Russian researchers draws on history to protect the animals.

Tree intern, Leni Classen (left), responds to letters sent to a chestnut tree in Dusseldorf, Germany. A postal worker from Deutsche Post (right) delivers mail to the tree's mailbox. The tree, which is planted in a nature reserve, has its own address and people often write to it for advice or to ask questions.

German Chestnut Tree Accepts Letters, Answers Queries, Promotes Environmentalism

The tree in Duesseldorf has gotten more than 5,000 letters and cards. People send it greetings, pour out their hearts, and ask for advice. The project encourages protection of old trees.

Martha shares her invaluable techniques for preparing the famous yeasted, sugarcoated doughnuts from New Orleans known as a beignets.

MARTHA BAKES: Homemade Doughnuts

Airs Saturday, May 21, 2016 at 2:30 p.m. on KPBS TV

A child-size dummy is crushed by a dresser during a Consumer Product Safety Commission news conference in Washington, D.C., in 2016. That year Ikea began a recall of millions of dressers after six children were killed in tip-over incidents. But a new study says that tip-over risks extend far beyond any one furniture-maker.

'Consumer Reports' Finds Dangerous Dressers In All Sizes And Shapes

Furniture tip-overs kill multiple children every year. A nonprofit group tested a range of dressers and found there was no way for consumers to tell by looking whether a dresser would be stable.

With Crimean Borders In Dispute, Google Maps Has It Both Ways

In most of the world, the region is included in Russia with a dotted line. Viewed in Russia, the line is solid. Guest host Tess Vigeland speaks with John Gravois about the issues with mapping borders.

Beata Felix Rutabingwa, a World Bank consultant, captures street photos on a motorcycle in Dar es Salaam.

How Do You Start Mapping Unmapped Streets?

With cameras and smartphones, volunteers are snapping pictures as they cruise Dar es Salaam's dirt roads.

The office of Justice Department special counsel Robert Mueller says 13 Russians and three Russian entities took part in a broad information war against the United States.

Grand Jury Indicts Russians Linked To Interference In 2016 Election

Justice Department special counsel Robert Mueller's office says 13 Russians and three Russian entities took part in a broad information war against the United States.

Facebook CEO Mark Zuckerberg walks at the company's headquarters in Menlo Park, Calif., in 2013. NPR asked Americans what steps they take to protect their Facebook data.

NPR Survey: Still On Facebook, But Worried

NPR asked Americans what steps they take to protect their Facebook data. Most say they still use the site, but they're concerned about who can see their information — and how it can be used.

At a recent National LGBTQ Task Force conference in Washington D.C., Luis Felipe Cebas (right) from Whitman-Walker Health, talks with Sarah Fleming about PrEP, the pre-exposure drug that can help protect against HIV infection.

PrEP Campaign Aims To Block HIV Infection And Save Lives In D.C.

PrEP is shorthand for a pill that prevents HIV infection, if taken daily. As Washington, D.C. aims to cut new infections in half by 2020, it hopes to quadruple the number of residents on the medicine.

Annotated: Trump's Executive Order On Religious Liberty

The executive order has drawn concern from some for not going far enough. Here's what we know.

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