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Supervolcanoes erupted on ancient Mars, study suggests

Scientists have found evidence of massive, extremely explosive ancient volcanoes on Mars that could once have had a big influence on the climate of the Red Planet. More 4:30 PM ET read comments
- Meteorite reveals that Mars volcanoes erupted recently 4:11 PM ET video
- Supervolcano: Yellowstone's fury (Doc Zone)
Cybercrime moving to smartphones and tablets, say experts

The growing popularity of smartphones and open Wi-Fi networks are making Canadians more vulnerable to online fraud and other forms of cybercrime, security experts say. More 11:34 PM ET read comments video
- Watch Online fraud costs Canadians $3B per year, report finds 2:05
7 ways to control privacy on Facebook despite Graph Search

Facebook users should check their privacy settings if they want to limit the people who can search every post or status update they have ever made, online security and technology bloggers say, following an upgrade to Facebook’s Graph Search. Here are 7 ways to protect your privacy on Facebook. More 1:53 PM ET read comments
- Analysis Dan Misener: Facebook Graph Search a powerful way to make new connections 2:42 PM ET

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October 5: Can You Catch OCD? Oct. 2, 2013 3:19 PM Is it possible to catch a mental illness, as you would the flu? Could Obsessive Compulsive Disorder be the result of an untreated strep throat infection? That's the provocative and controversial theory behind a childhood condition known as PANDAS.