Pro

1. Schools have turned to AI to detect guns and prevent mass shootings, but concerns about reliability and false alarms persist.
2. Critics argue that investing in technology like ZeroEyes diverts money from addressing the human causes of violence.
3. Kansas lawmakers funded ZeroEyes-style tech with $10 million to boost school security efforts.

• NIST scientists have published results establishing a new atomic clock, NIST-F4, as one of the world’s most accurate timekeepers, priming the clock to be recognized as a primary frequency standard — the ultimate source of time.
• The NIST-F4 clock was carefully and painstakingly assembled and tested over the last few years.
• By joining a small group of elite clocks run by a handful of countries, NIST-F4 makes the foundation of global time more stable and secure.

Current algorithms for the detection of deepfakes increasingly rely on remote pulse reading to distinguish them from genuine videos of people. Here, scientists show for the first time that the most recent deepfakes feature a global pulse rate which appears realistic. This worrying development makes it necessary for deepfake detectors to become more powerful, for example, by focusing on local variations in blood flow within the face.

Researchers have created a light-powered soft robot that can carry loads through the air along established tracks, similar to cable cars or aerial trams. The soft robot operates autonomously, can climb slopes at angles of up to 80 degrees, and can carry loads up to 12 times its weight.