Science & Technology

What could go wrong?

Soup comes in many variations — chicken noodle, creamy tomato, potato and leek, to name a few. But through much of human history, soup was much simpler, requiring nothing more than boiling a haunch of meat or other chunk of food in water to create a warm, nourishing broth.

So who concocted that first bowl of soup?

With no government ties, Bitcoin is used to buy everything from blogging services to Brooklyn-made cupcakes. Theoretically, millions of dollars are being kept in the digital currency, and it's increasingly being used by specialized online gambling websites. But is Bitcoin gambling legal?

Purely in the interests of journalism, I decided to get my hands on some of the currency. When I did so, Bitcoin, which has been around for a few years now, was fetching around $17 on most exchange sites. It has since risen to more than $20.

Have you ever spent a couple of hours working on a craft project — or a presentation for work — and then fallen in love with what you've accomplished? Do the colors you've picked for your PowerPoint background pop so beautifully that you just have to sit back and admire your own genius?

If so, get in line: You're the latest person to fall victim to the Ikea Effect.

(Revised on 2/6/1013 at 12:28 pm ET to include FCC comment.)

In Washington, there's always one kind of alleged war or another against some group or idea — the war on women, the war on religion and the war on the Second Amendment come quickly to mind.

This week, many of us became aware of another supposed conflict we had never heard of: essentially, a war on Wi-Fi.

Computer maker Dell is going private in a $24 billion deal that highlights the changing fortunes of the PC industry. The buyout is being led by company founder Michael Dell, software giant Microsoft and the private equity firm Silver Lake Partners.

Guys, it may be time to get off the couch and hit the treadmill — especially if you want to have kids.

Okay, we all know that exercise is good for us. It can reduce the risk of obesity, diabetes and heart disease, to name a few benefits. Now researchers say physical activity may also help keep sperm healthy and happy.

A confidential Justice Department memo obtained by NBC News outlines legal theories the Obama administration has used to justify killing American citizens abroad. Here are five key questions and answers about the document:

1) What is it?

Rape has long been a weapon of war, but documenting sexual violence usually happens after a conflict is over. Researchers are taking a new path with the Syrian conflict: tracking the incidents of rape as they occur.