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** Obese men don't experience a nighttime surge of a ghrelin, a hormone that stimulates hunger, while lean men do. Contrary to what one might suspect, UCLA scientists found that lean, not obese, men were more likely to experience hunger pangs between midnight and 6 a.m.
** Higher world temperatures are hurting rice crops. A research team working in the Philippines studied 12 years of rice yields and 25 years of temperature data. For every degree of warming, rice yields dropped by 10%. Rice production must rise 1% a year to meet population ...