welcome back. i want to check in with frances following the top stories trending on social media now including the president's twitters chat which lasted about 30 minutes to an hour. >> such a big deal when he joined twitter with potus, as well. he held his first-ever chat from his new account called @pat pottsus, using the hash tag tag @askpotus. he talked about getting action from congress and said "the science on climate change is overwhelming. what will move congress will be public opinion. your voices will make them open to facts." also trending is best-selling author j.k. rowling deferring to ireland's new gay marriage law against people on twitter. she's defending that. in response to a fan wondering of one of her male characters could marry "lord of the rings" gandolf. she tweeted they could in