Science
Oklahoma's Ames crater is about 100 million years younger than thought
Tiny zircon crystals in buried granite put the Ames impact in the Late Devonian, not the Ordovician.
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AI
AI wrote 31 percent of web text in a new sample, and it harms training
Researchers trained 800 models to see what happens when AI text gets mixed into pretraining data.
Sport
Whoop patents a wearable that reads oxygen levels in working muscle
The sensor would show whether a muscle is working with or without enough oxygen, without a lab.
Business & Startups
Suniva raises $835 million to grow its US solar cell output 5.5 times
A new South Carolina plant would take the only US-owned cell maker from 1 to 5.5 gigawatts a year.
Business & Startups
Stoke Space raises $1 billion for a reusable rocket that has not flown
The first Nova launch is now planned for early 2027, and a rocket five times larger is already on the drawing board.
Sport
A newer race start may be worth a second in middle-distance records
A preprint estimates how much the split-staggered start helped six world records set in 2026.
Sport
Extra sprinting in training costs soccer players speed the next day
A season of GPS, smart-ring and survey data from one elite women's team puts a number on the trade-off.
Business & Startups
Positron raises up to $875 million for an AI chip without HBM memory
Its next chip uses cheaper phone-style memory instead of HBM, to run models with very long inputs.
Health Tech
FDA's AI device list passes 1,600, and three in four read images
Radiology added 66 of the 89 AI devices cleared in the second quarter of 2026.
Health Tech
FDA clears a chest X-ray AI built on a foundation model
DeepHealth's tool flags four kinds of findings, and the company plans to add more on the same base model.
Health Tech
a2z gets FDA clearance to flag 10 more urgent findings on abdominal CT
The software sorts scans so radiologists see likely emergencies first. It does not make the diagnosis.
AI
AI beats the best Stratego players with a fraction of the practice
Ataraxos went 15-1-4 against the top-ranked player and needed less than a hundredth of the training examples DeepMind's DeepNash used.