that's christina shepard, norman of birmingham, alabama librarian there, who is dealing firsthand with these efforts to challenge are banned books, topic number one here at the american library research. john, thank you very much. john. 100, talking to us from chicago to mexico is facing its 3rd heat wave of the year. and scientists buying the el nino climate phenomenon. hospitals are busy treating patients with sheets related problems and some of them are faithful electricity. blackouts are increasing as john home and reports from the capital. a heat wave is searing its way through mexico. one of the longest thing is officials say, they're already been diss, and the countries know is being hit especially hard. my younger, i mean the grand deals tomorrow will also hit 42 or 43 degrees and it will continue as forecasted for 10 days to compare to the last 20 years. we haven't had such a long heat wave. this is why we're calling it a typical, it's even close the countries energy authority to assure warning the met screws powered grid is close to its capacity president under the is meant t