Castro, Booker retreat after questioning Biden's age, memory; Divisions on health care front and center at debate; Biden suggest playing "the record player" at home to help educate poor, minority families; TX lawmaker stands by his tweet to O'Rourke after debate; Trump rants about energy efficient light bulbs, says he looks too orange; Trump slams environmental agreements in rambling speech; Trump: we're working on "inspirational" tax cut; Seriously ill children fear deportation under Trump administration's new policy; Sick kids fighting for their lives now also fighting to stay in U.S.; Trump and GOP lawmakers consider opening Alaska forest to loggers, miners & drillers; Fears parts of the largest national forest could be torn down; via Knit