"We hope that someone will ask a question that can't readily be answered," says Hopkins High School student Barry Anderson, "and through the online activities, an answer will be found—a discovery!"

“我们希望有人会提出一个无法轻易回答的问题，”霍普金斯高中的学生巴里·安德森说，“通过在线活动，找到答案，就像一个发现那样！”

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Administration officials will spend Wednesday taking questions on the State of the Union in a day-long Office Hours marathon, an online question and answer session through Twitter.

WHITEHOUSE: Energy and Environment Latest News | The White House

We took to Quora.com, an online question and answer community, to find out what common items veteran jetsetters pack that rookies do not and got a suitcase full of answers.

BBC: Packing secrets from savvy travellers

The Explainer Team at the online magazine Slate took up that question, and here with the answer is Slate's Andy Bowers.

NPR: Slate's Explainer: Iraq's Shiite and Sunni Muslims