It's a staggering number: A billion people are now living in chronic hunger. The World Food Programme has launched a huge internet effort aimed at getting a billion people online to do something to help.
Whether you Facebook, Tweet, or blog, the WFP is reaching out to you.

Two of our favorite viral videos of the week...

This Tuesday, December 15, there will be a CNN/YouTube debate on climate change. It will take place in Copenhagen, as representatives of nations all over the world meet for a U.N. climate conference that some are touting as "do-or-die."
You can submit a question, express your view, and have it seen all over the world. You can also help decide which questions get asked.
Get involved, then tune in to watch it live on CNN.com Tuesday morning at 8 AM ET, or join the replay at 12 noon ET.
And let us know what you think.

We'll have an update on five Americans arrested in Pakistan, accused of plotting a terrorist attack. A representative at a Virginia mosque says it plans to look into the circumstances that led to the arrests.

Tiger Woods says he plans to leave golf to focus on his family. How are Woods' sponsors reacting to the latest twist in Tiger's tale?

What's happening with the credit card reform promised by Congress? Finance expert Clyde Anderson breaks it down for us.

Hanukkah 101: The eight-day Jewish holiday of Hanukkah began last night at Sundown. Josh Levs takes a look at some viral videos of the season - like this one from Sen. Orrin Hatch.

Join Betty Nguyen and TJ Holmes this CNN Saturday Morning, beginning 6am ET/3am PT.

This weekend in the Newsroom, we've been looking at the latest figures for the nation's youngest workers. Unmployment is at nearly double the national average.
Some groups representing these young workers are pushing President Obama for some concrete changes. In this video, you'll hear from a young man who took part in the president's summit on jobs.
Are you facing unemployment? Share your story - as well as any solutions you've found.

We have two great tams in the Newsroom today who will be taking your questions and giving you advice, live on TV.
In our 2 p.m. ET hour, join me with the Dolans, "America's First Family of Finance."
Then, in our 3 p.m. ET hour, we'll be joined by the "Smart Cookies," a team of women who turned around their financial lives and want to help you do the same.
What do you want to know? What can our guests help you tackle? Post here, and tune in to the Newsroom, where you just might get some answers.

Our special section on health, www.cnn.com/health, is packed with great stories, tips, and interactives. This morning in the Newsroom we're taking a look at some highlights.
Something you might have fun with: the "Genius Quiz." For starters: What is the 11-letter word that all smart people spell incorrectly?
The link above will get you to the answers.
Let us know how you do!

I'm covering a bunch of different topics today, and getting you links where you can learn more.
For starters:
Time has this list of "Top 10 Apologies," from Tiger Woods to President Obama to Mel Gibson. Plus, Plato and Henry IV. What do you think?
What have people suddenly started caring about - a lot - this year, and what has lost the most attention? Google comes out with its 2009 Zeitgeit List. Here's a take from the folks at CNN.com/TECH.
Susan Boyle's album comes out - and along with it, stunning numbers. What do these massive numbers say about her, the industry, and the Internet?
And coming up, we'll look at how young people are struggling to find jobs in this economy. Keep an eye out for a separate post on that.

This is one of my favorite sections on CNN.com. It tells you so much about the state of the war and the larger story of Afghanistan. Learn who the key players are in the country today, follow its complex (and often turbulent) history, and see photos of everyday life all over the country.
One of the most important sections: remembering the fallen. See the troops who gave their lives in this war, from around the world. There have been more than 1500 coalition deaths - more than 900 of them Americans.

As millions of Americans take to the skies, we're providing you resources to help plan out your trip - and prepare for dreaded flight delays. Here are a few Web sites to check for information on conditions at airports all over the country:
The FAA
Flightstats.com
AccuWeather.com
Orbitz Travler Update

At CNN.com's Travel section, check out Road Warriors. It's packed with advice to help you speed up your trip, and make the most of your time no matter where you get stuck.

Know any other great sites? Post and share below.