Latest about Health
Turmoil at the CDC, NASA's comet 3I/ATLAS image release, and the insect apocalypse.
Science news this week Nov. 22, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.
Are free radicals really that bad for you?
Free radicals are highly reactive molecules that are missing an electron. They get a bad rap, but could they actually have any benefits?
Best air purifiers for allergies 2025: Breathe easy this winter
BUYING GUIDE These are the best air purifiers for allergies you can buy in every category, from Levoit Core 600S and Molekule Air Pro to RabbitAir A3.
Best air purifiers for pet owners 2025: Remove pet dander, hair and odors
Buying guides These are the best air purifiers for pets, from Levoit Vital 200S and AirDoctor AD3500 to SwitchBot Table Air Purifier.
We went hiking with the Coros Pace Pro sports watch — It's surprisingly good
Reviews We liked having the Coros Pace Pro as our hiking companion, but we do not think this sports watch will be our go-to option for extreme outdoor explorations.
Slaying 'zombie cells' in blood vessels could be key to treating diabetes, early study finds
Clearing aged cells from blood vessels could help reduce inflammation, improve blood sugar levels and counter insulin resistance, a mouse study finds.
'I don't know if CDC will survive, to be quite frank': Former CDC officials describe the disintegration of the agency under RFK
Three former CDC officials share their experiences at the agency leading up to their resignations.
Blueair Blue Signature air purifier review: Powerful and elegant
Reviews Stylish and beautifully illuminated, the Blueair Blue Signature air purifier is a breath of fresh air (literally).
US could lose its measles elimination status within months, experts say
With 45 outbreaks of measles over the past year, the United States is at risk of endemic spread within months, experts told Live Science.
The US is on track to lose its measles elimination status in months. RFK needs to go.
Opinion Canada has lost its measles elimination status and the U.S. is likely to be next. These failures are the result of the anti-vaccination movement, bolstered by the appointment of Robert F. Kennedy Jr. — and it's a bellwether of the erosion of public health.
