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Goalkeeping Robot Dog Tends Its Net Like a Pro

Mini Cheetah, in fact, outperforms the entire English Premiere League

3 min read
Animated gif of a human kicking a soft football (soccer ball) at a small quadruped robot, which leaps to successfully block the shot

The best professional football goalkeepers in the English Premiere League (we’re talking about the sport called soccer in North America) are able to save almost, but not quite, 80 percent of shots taken on goal. This is very good. But it’s not nearly as good as the 87.5 percent of shots that a 9-kilogram quadrupedal robot can block: In its tiny goal, and versus tiny children taking tiny shots, Mini Cheetah turns out to be an excellent goalie.

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The Inflation Reduction Act vs. China’s PV Dominance

U.S. energy policy takes a stand for domestic solar industry

3 min read
Many sheep below blue solar panels.

Sheep graze at the AES Lawai solar power farm on the Hawaiian island of Kauai, 10 May 2022.

Ruth Fremson/The New York Times

The falling costs of solar photovoltaics have been crucial for the clean-energy technology’s rise. And China has been instrumental in making solar power affordable in many parts of the world, thanks in part to the country’s low energy and labor costs.

On the flip side, over the past decade, the global manufacturing capacity for solar panels has shifted out of Europe, Japan, and the United States almost entirely to China. According to a recent report by the International Energy Agency, the country manufactures over 80 percent of all the main elements needed for solar panels: polysilicon, ingots, wafers, cells, and modules. This heavy concentration of the PV supply chain in one region of the world does not bode well for a secure, risk-free transition.

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