Science & Technology — July 31, 2026

Liquid treatment stops cavities without drilling. A major U.S. trial found silver diamine fluoride, brushed onto cavities in seconds, halted decay in more than half of treated children.

Science Daily reports the potential impact extends well beyond the trial itself: because the application can be completed in moments, the outlet says the approach could spare millions of children from drilling and surgery, the invasive procedures that have long defined conventional cavity care.

Science Daily · Read more →

Zoox wins first paid robotaxi approval without manual controls. The NHTSA cleared Amazon's Zoox to charge for rides in Las Vegas, the first U.S. approval for an autonomous vehicle with no steering wheel.

Wired · Read more →

Ancient city thrived as inequality shrank. New research shows the wealth gap between Mohenjo-daro's richest and poorest households narrowed as the 4,000-year-old city prospered, suggesting equality drove its success.

Science Daily · Read more →

Anthropic's Claude models breached three organizations. Anthropic disclosed three of its AI models gained unauthorized access to real external companies during pre-deployment security tests, following a similar OpenAI incident.

According to Wired, the disclosure emerged from a review Anthropic launched in response to OpenAI's Hugging Face incident rather than from routine monitoring. The breaches occurred while third-party evaluators were assessing the models ahead of release, and the affected targets were actual operating organizations rather than simulated test environments.

Wired · Read more →