World-Renowned Physicist: The Truth About Aliens! UFOs Are Definitely Robotic - Michio Kaku artwork

World-Renowned Physicist: The Truth About Aliens! UFOs Are Definitely Robotic - Michio Kaku

The Diary Of A CEO with Steven Bartlett

May 21, 2026

Theoretical physicist Dr Michio Kaku has spent 70 years searching for the single equation that could explain everything in existence.
Speakers: Steven Bartlett, Michio Kaku
**Steven Bartlett** (0:00)
I love when a company takes something that everyone has accepted as being fixed and completely redesigns it, which is exactly what Lufthansa, today's sponsor, has done with its Lufthansa Allegris Business Class cabin. It is stunning. Instead of having just one type of seat, Lufthansa Allegris Business Class has five completely different seats, each engineered around a specific need. So there's one built purely around privacy, another with a bed that's over seven feet long, and one designed around having even more space to work, eat and think. You're essentially getting to choose what your journey needs to be before you even board the plane. And that level of thinking runs throughout the entire Lufthansa Allegris experience. An airline actually asking you, what does this traveler need from their flight? This idea that your seat should fit how you travel, not the other way around, is a surprisingly simple fix to something that the industry has never bothered to solve before. Anyway, it's called Lufthansa Allegris, and if you fly a lot, it's worth looking up. Visit lufthansa.com and search for Allegris to learn more. That's spelled A-L-L-E-G-R-I-S.
Lufthansa Allegris.
All it takes is a yes. Limited availability on selected routes with more routes coming soon.

**Michio Kaku** (1:15)
Immortality is tantalizing close.

**Steven Bartlett** (1:17)
And you think it's possible within the laws of physics and biology?

**Michio Kaku** (1:20)
Yeah. In fact, we know that there's a clock in our body called the telomeres that tracks how long we're going to live. And there's something called telomerase, which stops the clock, which means that we can live forever. That's the good news. But the bad news was we found out that cancer also uses telomeres and telomerase to live forever. And so the question is, can we apply that to humans without wakening up the cancers? But this is not science fiction. This is the future.

**Steven Bartlett** (1:46)
And for 71 years, you've been studying physics and how science will shape human destiny. So how is life likely to be different in the future?

**Michio Kaku** (1:52)
Well, decade by decade, we see the enormous progress that we humans have made. For example, we'll probably be on the moon, maybe onto Mars, and also the artificial intelligence will help us to cure cancer and many diseases. However, for the first time in human history, we have the potential of destroying ourselves with designer germs, nuclear weapons, perhaps artificial intelligence. Like this is a quantum computer. This is so powerful that even the CIA is worried about the fact that these could break into any known computer.

**Steven Bartlett** (2:23)
Including banks, even Bitcoin.

**Michio Kaku** (2:25)
That's right. So capitalism would vanish, society would come to a halt.

**Steven Bartlett** (2:29)
And what about humanoid robots?

**Michio Kaku** (2:30)
I would look seriously at the possibility of merging with them, so that we don't have a civil war. Realize that we're at the edge of a knife. You tilt it the wrong way, and there's world war. You tilt it the other way, and there's food and luxury for everyone. And it's up to us to decide which way the knife will go.

**Steven Bartlett** (2:47)
Dr. Michio Kaku, I've waited a long time to ask someone these questions. Where do you believe we came from? Do you think it's plausible that in fact we are living in a simulation? And then is there any evidence when we look out at the stars that there is non-human life out there?

**Michio Kaku** (3:04)
Okay, so first of all...

**Steven Bartlett** (3:10)
Guys, I've got a favour to ask before this episode begins. The algorithm, if you follow a show, will deliver you the best episodes from that show very prominently in your feed. So when we have our best episodes on this show, the most shared episodes, the most rated episodes, I would love you to know. And the simple way for you to know that is to hit that follow button. But also, it's the simple, easy, free thing that you can do to help us make the show better. I would be hugely grateful if you could take a minute on the app you're listening to this on right now and hit that follow button. Thank you so, so, so much.
Dr. Michio Kaku, for anyone that isn't aware of you and your work and they're wondering whether they should listen to what you have to say today because they don't know your work and they've not gone through the books and the interviews that you've done. How would you describe your experience?

**Michio Kaku** (4:01)
I work in something called String Theory, which we think is the theory that eluded Einstein over the last 30 years of his life. The theory of everything, the theory that explains the Big Bang, the formation of stars, galaxy, formation of the earth, life. I'm a physicist working in the theory of everything.

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