A study in Science tested one AI model on 146 kinds of findings in abdominal CT scans. Radiologists who used it caught about 10 more real findings out of every 100, with a small rise in false alarms. Here is what the test showed, and what it did not.

In a new Lancet lecture, a cancer researcher argues that screening should match each person's risk. I agree, as long as it also means doing less for people at low risk.

An AI system wrote a paper that cleared reviewers at an ICLR workshop. It is a real milestone, and an honest stress test of peer review itself.

Doctors in Philadelphia designed a gene-editing drug for a single infant in about six months. The early results are real, but they come from one child and a few weeks of follow-up.

A January 2026 Nature study links AI use to bigger scientific careers and a narrower spread of research topics. Both can be true at once, and that is the problem.

A Swedish screening trial randomized more than 100,000 women to test AI in real mammography. That, not another benchmark score, is what earns trust.

A 2025 study reported tiny bits of plastic in human brains, with more in people who had dementia. The finding is real news, but it is not proof of harm.

A small MIT study found that people who let ChatGPT write their essays remembered little of them. That is a real cost for learning, and it is not brain damage.

A large US trial found that close monitoring was not worse than usual surgical care for low-risk DCIS over about two years. Here is who it applies to, what counts as not worse, and why two years is only a start.

NASA's Perseverance rover found a Martian rock with spots that ancient microbes could have made. The chemistry is exciting, but the team says labs on Earth offer the best chance to settle it.

AlphaFold 3 predicts how proteins, DNA, RNA and drug-like molecules fit together. That is a real advance. A predicted shape is still a starting point, not a finding.

A large 2025 review linked about 7,000 steps a day with lower health risks. The finding is useful, but it is not a new magic number.