U.S., South Korea put on massive military drill

U.S. and South Korean forces on Friday conducted what they called their largest live-fire military exercise since the end of the Korean War, according to reports from South Korea.

Facebook pulls location-tracking feature

Following a period of freak-out on the Internet on Monday, Facebook appears to have pulled a controversial feature that let the social network's users get a digital list of other Facebookers nearby.

Olympics: Blake jolts Bolt again

Sprint superstar Usain Bolt is beaten by fellow
Jamaican Yohan Blake for the second time in
48 hours as he is pipped to first place in the
200m final at the Caribbean nation's Olympic
trials.

What did the Supreme Court decide on health care?

In its 5-4 decision to uphold the U.S. health care law, the Supreme Court answered several key questions:

-Question: Can the court decide the constitutionality of health care now, or does it have to wait a few years?

To answer, the court had to decide whether a penalty the law imposes on people who do not have health insurance amounts to a tax.

A previously obscure law mandated that the legality of a tax cannot be challenged until it is imposed, and the health care law doesn't call for penalties until 2014.

-The court's answer: The court upheld the entire law.

-Question: Is the requirement that people have health insurance -- the so-called individual mandate -- constitutional?

-The court's answer: Chief Justice John Roberts wrote that the commerce clause did not apply, but the mandate stands under the taxing clause.

-Question: If the individual mandate is unconstitutional, can the rest of the law stand, or is the whole thing unconstitutional?

-The court's answer: The mandate is constitutional, rendering moot further questions on the rest of the law.

-Question: Can the federal government force states to expand their share of Medicaid costs and administration?

-The court's answer: Yes, but the justices ruled that the federal government cannot remove existing Medicaid funding if the states choose not to participate in the new program.

Are voters ready to move on?

With the Supreme Court's thunderbolt, a crucial battle is over on health care, but the war surely goes on. Or does it?

There has been a widespread view among conservatives that if the court were to uphold Obamacare that would do more to galvanize the tea party and other parts of their base than any other outcome. Anger and frustration can be powerful motivators in politics.

Millions still without power amid record heat wave

Residents in the central and eastern United States will sweat through another blistering day Monday as power outages from weekend storms continue to plague millions.

The intense early-summer weather has baked areas from Missouri to New York to Georgia with record-breaking heat and unleashed fierce storms that knocked out power over the weekend. At least 16 people were killed from the series of storms.

Extreme heat is the leading cause of weather-related deaths in the United States.

With Google Now, Android Puts Apple's Siri To Shame

After Apple bought Siri a few years ago, many assumed it was the company's first step in a battle against Google's search business. It was a good assumption.

But at All Things D's D8 conference in 2010, Steve Jobs tried to put that speculation to rest by saying Apple had slightly different plans for Siri.

"[It's] not a search company. They're an AI company. We have no plans to go into the search business. We don't care about it. Other people do it well," Jobs told Kara Swisher and Walt Mossberg.

Jobs was mostly right. Siri launched on the iPhone 4S in October as more of an intelligent virtual assistant than a searching tool. Siri is designed to set reminders, send text messages, make appointments, etc. Search is kind of part of Siri, but it relies heavily on Wolfram Alpha, a "knowledge engine" that usually does a great job at answering oddball questions like "What's the GDP of Greece?" but not so great at pulling up queries normal humans need.

That's why I was so excited when Google announced Google Now, a search-centric, voice-powered digital assistant for the upcoming version of Android called Jelly Bean.

I've been using Jelly Bean on a Galaxy Nexus and Nexus 7 for the last few days. And I can say Google Now is a lot more impressive than Siri. Google Now fills in all the gaps left by Siri, and does pretty much everything else a whole lot better. This is how search should work on mobile devices.