Chemistry
- Physics
Could we ever build the tech to shrink ourselves?
The atoms that make us up couldn’t be shrunk or smashed closer together — at least, not without catastrophic consequences.
- Chemistry
Scientists Say: Element
The number of neutrons and electrons can vary in atoms of the same element. The number of protons alone sets each of these substances apart.
- Physics
Zap! Peeling off tape can spark chemical reactions in the air
Ripping tape off a roll triggers flashes of lightning. Harnessing these micro-sparks might one day lead to greener chemistry.
- Chemistry
Uncover leaves’ hidden colors in this science activity
Let’s use a technique called paper chromatography to separate the pigments lurking in tree leaves.
- Environment
Watch out: Hail can get really big!
New data from hailstones suggest most of these icy chunks may not form the way scientists long thought.
- Health & Medicine
New study links chemical in plastics to fatal heart disease
More than one in eight deaths from heart disease in older adults is being linked to DEHP. The plastic chemical appears to play a role in many other health issues, too.
- Space
This astronomer searches for alien chemistry and tech
At the SETI Institute, Chenoa Tremblay uses radio telescopes to look for molecules and emissions given off by alien technology.
- Chemistry
Newfound ‘anti-spice’ compounds tame chili peppers’ heat
Five compounds make some chili peppers taste less spicy than others. Scientists are still figuring out why.
- Fossils
North American rhinos once gathered in large, hippo-like herds
The stumpy-legged rhinos survived until about 12 million years ago, when a supervolcano’s ashfall smothered their world.
- Chemistry
Scientists Say: Lipid
These oily, water-repelling molecules knit together, forming the membranes that sustain life.
- Microbes
Experiment: Yeasty beasties
It’s hard to believe a packet of dry yeast is full of living things. But feed the yeast the right things, and presto! You’ve got bubbly, oozing mess of life.
- Chemistry
Scientists Say: Chiral
Many biological molecules come in a left- and right-handed form — and biology plays favorites.
