Rita Bennett understands that teaching math to her second graders these days adds up to a whole lot more than 2 + 2 = 4. On one recent morning she presented the following problem to her Simi Valley, ...

Jackson Ryan was CNET's science editor, and a multiple award-winning one at that. Earlier, he'd been a scientist, but he realized he wasn't very happy sitting at a lab bench all day. Science writing, ...

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