Health & Medicine
Many U.S. teens underestimate fentanyl’s deadly risk
A majority of 8th-graders and roughly a third of 10th- and 12th-graders do not see great risk in using fentanyl once or twice, a study reports.
Humans
We summarize the week's scientific breakthroughs every Thursday.
More Stories in Humans
- Archaeology
We’ve had fire for longer than we thought
Archaeologists have unearthed new evidence that indicates hominids used fire up to 1.79 million years ago.
- Health & Medicine
Even ‘safe’ air pollution levels may affect heart health
An imaging study found early signs of coronary artery disease in people in Canada breathing air that regulators consider clean.
- Health & Medicine
The New World screwworm has returned to the U.S. Now what?
At least a dozen animals have been found with the flesh-eating maggots. It could take more than a year to eradicate the parasite again, experts warn.
- Health & Medicine
A deadly fungus that can infect cats and people is spreading
It’s just a matter of time before Sporothrix brasiliensis reaches the U.S. a CDC expert says.
- Archaeology
The oldest known plague outbreak struck hunter-gatherers 5,500 years ago
Plague DNA in ancient graves near Siberia's Lake Baikal suggests the disease threatened people long before farming and crowded settlements.
- Health & Medicine
A blood test for dementia may tell you if you have more than one type
AI helped researchers develop an experimental blood test that might let doctors diagnose overlapping dementias.
- Health & Medicine
Why more male than female newborns may get the crucial vitamin K shot
Vitamin K lowers the risk of bleeding, including in a circumcision. That procedure may explain a disparity in which infants are more likely to get the shot.
- Health & Medicine
A popular sunscreen ingredient can finally be sold in the United States
The FDA will allow bemotrizinol in sunscreen. The chemical is long-lasting and defends against solar radiation that ages skin.
- Chemistry
A new method could spot fentanyl variants no one has cataloged yet
Researchers used machine learning to help predict chemical signatures for over 1 billion possible fentanyls, including variants never seen before.
