I totally enjoyed talking with @LeiTian14 about his work with "wearable microscopes" and other super-cool stuff.

This was such a fun story to write I came out of Twitter retirement to share it. Using lasers and genetic engineering, @okaysteve and team @BU_NPC have shown how we might selectively edit memories. #LikeInThatMovie #TheOneWithArnold

Hey, Twitter. I'm back. Did I miss anything?

@SenJohnMcCain @LindseyGrahamSC @POTUS Thank you, Senators McCain & Graham. Keep fighting the good fight in upholding our values.

@ericsjefferson Soon I may be the only one. And that's as it should be.

@atu2comSherry @mattmcgee That's hilarious. I'm glad someone is excited about all of this...

@atu2comSherry @mattmcgee First time logging on to Twitter in quite a long time and I find Matt mocking us here in Boston. ;-)

@Sarah_D_Mathews Good to see you! I'm not especially active here but I peek in now and then. I don't want to miss anything exciting. ;-)

@ST_U2 #u2chat Thanks, Stuart. That'd be me, the newbie. ;-)

@ST_U2 @EnderBowen I'm totally with you Stuart. And Songs of Ascent might have been better still. ;-)

@mattmcgee Was just thinking about Live Aid when Collins stopped singing and some 100K of us went, BA-DUM BA-DUM BA-DUM BA-DUM BUM BUM.

@thecravecase Great to meet you ... triple-threat indeed. ;-) Glad to see you're enjoying parks on the way home!

@cjsendrinal Great to see you and all the other @U2 folk, Chris!

@thecravecase Enjoy!

@cjsendrinal Baby time? Very exciting!!

@CVersage Excellent. Thanks. ;-)

@CVersage Awesome. I'll get the hang of this thing yet. Hope you're staying warm over there!

@BeautifulDay36 and @u2wanderer It's nice to see you on here. I look forward to following everyone's further exploits!

@CVersage are you still on the Twitter? I thought I'd give it another go.

@winnig Beautiful little ones, Cliff. Congrats again!