Gallium arsenide is one of the best materials for solar cells, in theory. But it’s been expensive to make. Startup Alta Devices is pursuing ways to make it cheaper. In this video, one of its founders, Caltech professor Harry Atwater, explains its strategy for making solar cells that are far more efficient than the today’s solar cells, yet also inexpensive.
The big new idea for making self-driving cars that can go anywhere
The mainstream approach to driverless cars is slow and difficult. These startups think going all-in on AI will get there faster.
Inside Charm Industrial’s big bet on corn stalks for carbon removal
The startup used plant matter and bio-oil to sequester thousands of tons of carbon. The question now is how reliable, scalable, and economical this approach will prove.
The hype around DeepMind’s new AI model misses what’s actually cool about it
Some worry that the chatter about these tools is doing the whole field a disservice.
The dark secret behind those cute AI-generated animal images
Google Brain has revealed its own image-making AI, called Imagen. But don't expect to see anything that isn't wholesome.
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