weight loss

On a recent Sunday night, Liz Paul was tired. She'd worked in the morning, spent a full day with her family and she did not feel like going out for her daily jog.

"I tweeted out, 'Well, it's 9 p.m. on Sunday and I didn't work out,' " she says, "I really shouldn't go run in the dark should I?"

The response was immediate. The network of people Paul is relying on to help in her battle to lose weight chimed in with advice. Some tweeted back, "Yes, get out and run." Others offered alternatives like a video workout. But everyone said, "Do something!"

When it comes to tackling obesity, eating right and staying active are usually the way to go. But a research team in the Netherlands says there's an environmental factor that might help and that is often overlooked: the cold.

We're not talking bone-chilling temperatures that'll make you shiver endlessly, but a milder cold between 62 and 77 degrees.

Author and Biblical expert James Tabor discusses his new book, "Paul and Jesus", about the apostle Paul's influence on the development of Christianity.

Patty Christopher and Gino Gambino, a married couple who've lost over 300 pounds combined, talk about enjoying Thanksgiving without packing on pounds. Their book is "The Real People's Guide To The HCG Diet".

Rebecca Costa on her book, "The Watchman's Rattle", about how genetics drives instinctive behaviors that affect almost everything.