Most survivors of World War II's Nazi concentration camps are now in their 80s and 90s, and soon there will be no one left who experienced the horrors of the Holocaust firsthand -- no one to answer questions or bear witness to future generations. But as we first reported two years ago, a new and dramatic effort is underway to change that by harnessing the technologies of the present and the future. To keep alive the ability to talk to -- and get answers from -- the past. Our interview with Holocaust survivor Aaron Elster, who spent two years of his childhood hidden in a neighbor's attic, was unlike any interview we have ever done. "Aaron, tell us what your parents did before the war," Stahl asked Elster. "They owned and operated a butcher shop," Elster said. It wasn't the content of the interview that was so unusual. "Where did you live?" Stahl asked. "I was born in a small town in Poland called Sokolów Podlaski," Elster said. It's the fact that this interview was with a man who was no longer alive. Aaron Elster died four years ago.

Here's what you need to know as you start your day ... Pelosi: Trump'imminent threat' to'our Democracy,' lawmakers moving forward with impeachment The House will be moving forward with a resolution to impeach President Trump, said House Speaker Nancy Pelosi, referring to the president in a letter to colleagues as an "imminent threat" to both the U.S. Constitution and democracy. In the letter Sunday, Pelosi said the House will act with "great solemnity" with less than two weeks remaining before Trump is set to leave office. "In protecting our Constitution and our Democracy, we will act with urgency, because this President represents an imminent threat to both," she said. Pelosi said the House will try to force Vice President Mike Pence and the Cabinet to oust Trump by invoking the 25th Amendment. On Monday, House leaders will work to swiftly pass legislation to do that.

Leslie Stahl asked Elon Musk on Sunday's episode of 60 Minutes, as the scene showed her riding on the freeway with Musk in a red Tesla Model 3. "Yeah," the CEO answered, settling back into the driver's seat, his hands clasped together over his stomach, after turning on the car's semiautonomous driving system. "Now you're not driving at all," Stahl said, incredulously, looking over at his feet. Musk went on to demonstrate the car's new Navigate on Autopilot feature, which lets it change lanes by itself. Stahl's wowed reaction--"Oh my goodness"--matches that of many people when they first see the Tesla take control of its steering and speed. But her questioning, trying to gauge Musk's involvement in the driving process, highlights a significant issue Tesla faces as it rolls out ever more advanced Autopilot features.

A well-documented finding in the help-seeking literature is that especially those learners who need it the most do not seek help (appropriately). In this exploratory study, we investigated re-reading as a unique window into elementary help-seeking processes. Students had to learn the content of multiple hypertext pages of different complexity for a subsequent knowledge test. After this learning phase we randomly assigned learners to two experimental groups: The memory control group (MG, n = 14) directly answered the knowledge test and the experimental help-seeking group (HSG, n = 15) had the option to re-read the hypertext pages before answering. Results show that HSG students outperformed MG students and that HSG students strongly adapted the extent and frequency of their re-reading to task complexity and the complexity of the hypertext pages. However, more re-reading or more adaptivity did not automatically enhance performance on the knowledge test. The implications of these findings for the design of adaptive (metacognitive) help functions in computer-based learning environments will be discussed.