Thrifty

Scientists have never known precisely how much energy a cancerous tumor expends growing in the mammalian body. They hypothesized that it consumes a great deal of energy, churning through nutrients and putting healthy tissue -- the heart,…

“After booking, keep checking the fare,” said George Hobica, the founder of the flight deal site Airfarewatchdog.com, who canceled a $650 flight when he found the same itinerary with the same airline earlier in the day for $400; after…