5,010 results
- Humans
Human embryo replicas have gotten more complex. Here’s what you need to know
Lab-engineered human embryo models created from stem cells provide a look at development beyond the first week. But they raise ethical questions.
- Genetics
Most of today’s gene therapies rely on viruses — and that’s a problem
The next big strides in gene therapy for rare diseases may come from CRISPR and new approaches to delivery.
- Chemistry
These chemists cracked the code to long-lasting Roman concrete
Roman concrete has stood the test of time, so scientists searched ruins to unlock the ancient recipe that could help architecture and climate change.
- Animals
Whale sharks may be the world’s largest omnivores
An analysis of the sharks’ skin shows that the animals eat and digest algae.
- Health & Medicine
How living in a pandemic distorts our sense of time
The pandemic has distorted people’s perception of time. That could have implications for collective well-being.
- Oceans
Sharks face rising odds of extinction even as other big fish populations recover
Over the last 70 years, large ocean fishes like tuna and marlin have been recovering from overfishing. But sharks continue to decline toward extinction.
- Chemistry
How rare earth elements’ hidden properties make modern technology possible
Because of their unique chemistry, the rare earth elements can fine-tune light for many different purposes and generate powerful magnetic fields.
- Science & Society
We prioritize family over self, and that has real-world implications
Two studies show how family bonds improve personal and mental health, suggesting policy makers should shift away from individualistic mindsets.
- Genetics
Black Death immunity came at a cost to modern-day health
A genetic variant that boosts Crohn’s disease risk may have helped people survive the 14th century bubonic plague known as the Black Death.
- Science & Society
Big questions inspire the scientists on this year’s SN 10 list
These scientists to watch study climate change, alien worlds, human evolution, the coronavirus and more.
- Physics
How fast a row of dominoes topples depends on friction
Computer simulations reveal that two types of friction are important in determining how quickly dominoes collapse.
- Health & Medicine
Procrastination may harm your health. Here’s what you can do
Scientists have tied procrastination to mental and physical health problems. But don't panic if you haven't started your New Year's resolutions yet.
