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"Course Hero" Shares Study Material Online From 2 Million Students

While enrolled at Cornell University, Andrew Grauer felt the frustration of many undergraduates: Too much knowledge is bottled up in private hard drives and individual brains. Course Hero is about democratizing access to quality learning materials and services, he says. So he took a semester off from school and founded the company, which quickly reached 1 million visitors a month.

Recent Posts
Wee Robot Wanders the Streets To Raise Money For Charity (Video)

The future of fundraising may conjure visions of Star Wars. Tim Pryde, a 21-year-old product-design student at the University of Dundee, in Scotland, built a small robot that travels through public spaces, relying on coin donations for charity into a slot on its back to keep moving. And, it works.

Wee Robot Wanders the Streets To Raise Money For Charity (Video)

The future of fundraising may conjure visions of Star Wars. Tim Pryde, a 21-year-old product-design student at the University of Dundee, in Scotland, built a small robot that travels through public spaces, relying on coin donations for charity into a slot on its back to keep moving. And, it works.

Best Daring, Acrobatic Stunts by Amazing People on YouTube

These athletic daredevils were chosen as best on YouTube to represent this year's Amazing People collection. From jumping with skateboards, bikes and snowmobiles to doing flips over cars before scoring a basket, they all tested themselves -- and emerged victorious. Don't try this at home.

Sikh Woman Turns Cyber Bullying Incident into Inspiration

After someone snapped a photo of her and posted it on online, Balpreet Kaur was ridiculed for following the tenets of her Sikh faith. But instead of hiding or lashing out, she politely posted a reply—and turned a bullying situation into a inspiring example of tolerance, support, and inspiration.

El Salvador's Gang Truce Cuts Murder Rate Dramatically

Gang leaders in El Salvador declared an unprecedented truce that authorities say has cut the homicide rate in half in just four months. In March, rival gangs surprised the country by releasing a joint statement declaring an end to violence and pledging to freeze recruitment of new adolescent members, especially in poor neighborhoods and around schools. Since then, the change has been dramatic.

Oprah Celebrates First Graduating Class of South African Girls Academy

The Oprah Winfrey Leadership Academy for Girls, which opened in January 2007 in South Africa to provide educational opportunities for gifted girls from impoverished backgrounds, celebrated its first graduating class Saturday. 72 girls of graduating age filed onto the stage, all wearing white dresses, to cheers and tears from Oprah herself, who'd invested $40 million to give them a safe haven and opportunities undreamed of before.

Man Wins 2011 Amway Hero Award for Generosity

By the end of this week, twelve families in Guatemala will have a home, a direct result of one man's philanthropic efforts. For the last seven years, Floridian Tim Foley has traveled to work in a small town in Guatemala constructing houses for low-income families. Since 2005, Tim and his team have already built 54 homes. For his selflessness, he won the 2011 Amway Hero Award for Generosity.