Tech
New light-activated coating can kill stubborn germs
Based on graphene, this new material can knock out hard-to-kill germs on contact — even in your mouth.
HS-ETS1-3
Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics, as well as possible social, cultural, and environmental impacts.
More Stories in HS-ETS1-3
- Chemistry
Explainer: What is chirality?
Chiral molecules are mirror images of each other. They might not seem all that different — but can have drastically different effects in medicine, materials and more.
- Animals
Lions have a second roar that scientists have only just discovered
This insight from machine-learning analyses of recordings of calls in the wild might help detect where lions are declining.
- Artificial Intelligence
Chatbots may make learning feel easy — but it’s shallow
People who use search engines gain deeper knowledge and care more about what they learn than those who rely on AI chatbots, a new study finds.
- Genetics
Scientists created human egg cells from skin cells
The technique could someday help people without reproductive cells of their own have children. But much more research is needed.
- Artificial Intelligence
5 things to remember when talking to a chatbot
When using ChatGPT or other chatbots, remember your voice matters and watch out for flattery and hallucinations. And for important advice, ask real people.
- Health & Medicine
A little shape-up helps these pimple patches get a grip
These zit patches use some innovative geometry to anchor onto skin. This solves one problem that’s hindered other uses of microneedles for drug delivery.
- Tech
A modified glue gun squirts a material to help heal broken bones
The handheld printer might someday apply bone-repair patches directly onto fractures — complete with antibiotics to prevent infection.
- Earth
These ultra-long experiments outlive their scientists — on purpose
To study phenomena that unfold over decades or even centuries, scientists may launch projects they may never see finished.
- Tech
Did builders of Egypt’s first pyramid use a water-powered elevator?
A controversial study suggests that ancient people might have used one to hoist the stones used to assemble into King Djoser’s pyramid.
