MS-PS1-1
Develop models to describe the atomic composition of simple molecules and extended structures.
- Earth
When life exploded
Life exploded in diversity during the Cambrian Period. Experts are exploring what could account for this sudden change 540 million years ago.
- Health & Medicine
Cookie Science 2: Baking a testable hypothesis
I would like to make a gluten-free cookie that my friend can eat. But to do that, I need to come up with a hypothesis to test.
- Chemistry
Chemistry: Green and clean
“Green” means environmentally friendly and sustainable. Green chemistry creates products and processes that are safer and cleaner — from the start.
- Genetics
Owww! The science of pain
No one likes pain, but it keeps us alive. That’s why scientists want to learn how best to coexist with this complicated and still somewhat mysterious sensation.
- Tech
Digital displays get flexible
Flexible and unbreakable digital displays could soon be for sale, thanks to a new organic transistor made from plastic.
- Tech
Digital lighting goes organic
An environmentally friendly lighting technology promises not only to save energy but also to transform our indoor environment.
- Physics
Quark quartet forms exotic particle
Quarks are important building blocks of matter, usually bound together as pairs or triples. Now some have formed a quartet. Scientists confirmed the existence of a particle made of four quarks stuck together. Such strange stuff may have been more common in the earliest universe, the scientists say.
- Physics
World’s coolest ‘clock’ is also crazy-accurate
This is the time to beat — the world’s most accurate atomic clock ever. At its heart is a ‘fountain’ of cesium atoms chilled nearly to absolute zero!
- Health & Medicine
Simple test for cancer and heart disease
Disease diagnosis often requires expensive equipment and tests to probe deep inside the body. But a new test relies on a fast, cheap and easy technique. And its answers appear on a strip of paper — just as they do on a pregnancy test.
- Chemistry
Explainer: Ocean acidification
Here’s why shellfish and other animals in the sea suffer when the ocean is forced to absorb too much carbon dioxide.
- Tech
Tracing a gem’s origins
Lasers identify the country — and even a mine — that a precious stone hails from.
- Science & Society
Introducing the 2011 Nobel Prize winners
Scientists in 2011 won for making unexpected discoveries about crystals, the human body and the universe.
