Is Dark Energy Decaying?

Brian Greene and Michael Levi discuss revolutionary observations that may upend our cosmological understanding.

This program is part of the Big Ideas series, supported by the John Templeton Foundation.

Participants:
Micheal Levi

Moderator:
Brian Greene

- SUBSCRIBE to our YouTube Channel and "ring the bell" for all the latest videos from WSF
#worldsciencefestival #Darkenergy #desi #briangreene #physics

[roshbaby]

What a fantastic conversation. Especially the part around the experimental design and challenges. Michael Levi's passion & excitement was so palpable.

[WaitingforGodel]

"Did I say anything smart"? Totally relatable 😅

[thomasjorennielsen]

BRIAN GREENE BEEN DROPPING NEW VIDS EVERY FEW DAYS AND ITS AMAZING

[lastchance]

Brian, I have to say we find this model superior to the usual group discussions. Besides the personal details and anecdotes, it comes across with better discussion of the core science. Keep up the good work!

[sakismpalatsias]

Always enjoy professor Greene's world science festival. I'm absolutely intrigued by the subject. Though it's 2.5σ it's enough to go forward for further investigation. Finding the answer is most important... BC those answers shall create more questions. Which is the fun part.

[markoszouganelis]

Thank you very much 🌈World Science Festival!

[woodpecker]

Brian always translates a bunch of gibberish i don’t understand into a language i can comprehend - a real master at teaching

[MrVikingsandra]

Please keep these coming! I keep learning so much, these talks are truly priceless, thank you for everything you do for us Brian!

[Mateusz-rxqo]

I remember getting excited when I first heard about the blind analysis approach with this observation.

I didn’t even know there was a name for the don’t peek at the results approach to testing, but I guess we all do this when we prioritize accuracy over information bias. 😂

You have to appreciate the hard work put in to get these results!

[sandypickett]

Briliant Brian. Extraorinarilly interesting and exciting conversation with Michael Levi. For a person to invest years of his life into inventing new equipment to examine a theory is absolutely fascinating.

[donwp]

What a super interesting discussion. Thank you to everyone involved.

[DaveTerrasidio]

fantastic discussion guys! love the channel! : )

[Krnw]

Whenever I watch the World Science Festival videos, I double check if I clicked the like button or not. I always love them. ❤

[VbrationCanine]

Thank you for educating the masses, Dr. Greene.

[thomasdequincey]

This was so good. Incredibly interesting.

[mackenzieonyx]

ooh, ur outro jam is absolutely exquisite ^_^ its so cute, playful and pleasant but alsoo, totally en-capsules a sense of mystery lol.. as a frequent consumer of this sort of media, i would just like to say, very well done! ^_^ so often, you're more likely to come across an intro or outro that is..well, quite annoying >_< ..or ykno, sometimes.. the sound is just way off! usually by being too loud or distracting..either way, all unpleasant and today!, there was none of that here. nothing but a pleasant experience yet again ^_^ so, thanks sm for that ^_^ -EC

[ggraemeffrance]

Ok thanks for all the good information about the cosmos love your videos and to the sound quality of your voice its amazing keep up all them vids

[jameshoey]

Thank you Brian.. your work is food for my curiosity and gives joy… .

[charleslaurice]

Finally, thank you for bringing this to the forefront. I’m so happy I can cry Dr. Green thank you thank you thank you for having this conversation about what’s up and what’s new and how to shift the gears. Thank you.

[gravoc]

This is both interesting and scary. If the cosmological constant isn’t actually a constant. What other rules of physics are not constant? Is it possible that the laws of nature change over time? Will it ever change to something incredibly hostile to life and orders of complexity?