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Hypersonic aviation in “growth stage”
Link to tweet here.
Beaming solar energy from space gets a step closer (WSJ)
“It’s basically the same technology as wireless charging for your cellphone,” says Chris Rodenbeck, head of the Advanced Projects Group at the U.S. Naval Research Laboratory in Washington, D.C. In 2021, Rodenbeck and his collaborators sent a 1.6-kilowatt beam of microwaves (also similar to those used for Wi-Fi signals, but at a higher frequency) from a transmitter to a receiver two-thirds of a mile away at the U.S. Army Research Field in Blossom Point, Md. The researchers said they used microwaves because they travel freely through the air, unaffected by weather. Nobody has yet pulled off an equivalent feat from orbit, however.
More here.
Marc Andreessen: Why AI will save the world
Human intelligence is the lever that we have used for millennia to create the world we live in today: science, technology, math, physics, chemistry, medicine, energy, construction, transportation, communication, art, music, culture, philosophy, ethics, morality. Without the application of intelligence on all these domains, we would all still be living in mud huts, scratching out a meager existence of subsistence farming. Instead we have used our intelligence to raise our standard of living on the order of 10,000X over the last 4,000 years.
Read more here.