Topic: Lisa Kaltenegger

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In search for life, more planet 'candidates' are found. Are any just right?

For a planet to support life, it faces long odds: It has to be the right size, right composition, and right distance from its star. On Monday astronomers announced a trove of new planet 'candidates.'
Avatar: the real-life science behind the fantasy

Floating mountains? Glowing plants? They're in 'Avatar,' and they're not beyond the realm of scientific possibility.

Doing Good

What happens when ordinary people decide to pay it forward? Extraordinary change...

Scott Budnick works in the dining room as customers arrive for a free meal at the Mathewson Street Friendship Breakfast in Providence, R.I.

Scott Budnick serves breakfast – with a side order of respect – to the homeless

Sunday breakfast at a Providence, R.I., church is more than a free meal. Half the volunteers are homeless themselves: 'It's their [own] breakfast that they're putting on.'

Topic: Lisa Kaltenegger

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In search for life, more planet 'candidates' are found. Are any just right?

Avatar: the real-life science behind the fantasy

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