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Are you protected against measles? Do you need a booster shot? Everything you need to know about immunity
By Jess Thomson published
There have been hundreds of measles cases reported in the U.S. since the beginning of the year. Here's what you need to know about measles immunity.

US measles outbreak tops 300 cases — what to know about the disease
By Emily Cooke last updated
As measles outbreaks in the U.S. continue, here's what to know about how the disease spreads, what its symptoms are, and how to protect yourself and community from the illness.

US reports 1st outbreak of 'highly pathogenic' H5N9 virus in poultry. Should we worry?
By Emily Cooke published
Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry.

Why is DeepSeek such a game-changer? Scientists explain how the AI models work and why they were so cheap to build.
By Ben Turner last updated
DeepSeek's V3 and R1 models took the world by storm this week. Here's why they're such a big deal.

FDA approves ketamine-like nasal spray for depression — here's everything you need to know
By Emily Cooke published
A nasal spray that contains esketamine — a potent derivative of ketamine — can now be taken on its own to treat adults with severe depression, the FDA says. Here's what that means.

What are Zyn nicotine pouches? And are they bad for you?
By Emily Cooke published
The FDA has given marketing authorization to Zyn nicotine pouches. That doesn't necessarily mean they're safe to use, especially for young people, and experts say there's little evidence that they help adults quit smoking.

Why do we add fluoride to drinking water, and is it safe?
By Marilyn Perkins last updated
Fluoride is added to tap water in many countries around the world. But why?

'Mystery disease' in Congo turned out to be malaria — and potentially, another disease
By Nicoletta Lanese published
An initially "unknown" illness affecting hundreds in the Democratic Republic of the Congo may be attributable to malaria, malnutrition and a viral infection. But investigations are ongoing.
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