Jeff Cardenas is the co-founder and CEO of Apptronik. Jeff's problem is this: Can you make a safe, reliable humanoid robot – for less than $50,000?

In the short term, Apptronik’s robots will work in factories. But Jeff’s long-term goal – based on the experience of his own grandparents – is to build robots that can help care for the elderly.

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We need better, cheaper ways to store solar and wind energy when it’s dark out and the wind isn’t blowing.

One option: Compressing air in underground caverns when energy is abundant, then blowing it back out to create energy when you need it. It’s an old idea, but it has some fundamental problems.

Curtis van Wallingham, the co-founder and CEO of Hydrostor, thinks his company has solved those problems with a new approach. If he’s right, his firm will help fix the biggest bottleneck slowing down the adoption of solar and wind power.

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There are moments in history when people make huge technological advances all of a sudden. Think of the Manhattan Project, the Apollo missions, or, more recently, generative AI. But what do these moments have in common? Is there some set of conditions that lead to massive technological leaps?

Byrne Hobart is the author of a finance newsletter called The Diff, and the co-author of Boom: Bubbles and the End of Stagnation. In the book, Bryne makes the case for one thing that is really helpful if you want to make a wild technological leap: a bubble.

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