Chemistry
- Chemistry
Cool Jobs: Counting calories
Do calories count? A nutrition label doesn’t tell the whole story. Meet three researchers working to shed light on the complex connections between food and health.
- Chemistry
Steady heartbeats may depend on white blood cells
Biologists have just found a new role for germ-fighting white blood cells. In the heart they appear to serve as pacemakers so that the heart beats regularly.
- Earth
Beyond diamonds: Search is on for rare carbon crystals
A search for previously undiscovered carbon minerals was announced in December 2015. Researchers have begun finding a handful and are actively scouting for dozens more.
- Chemistry
Scientists Say: Isotope
An isotope is a variety of an element that has the same number of protons but a different number of neutrons — or neutrally charged particles.
- Chemistry
Scientists know that you pee in the pool
A new way to find urine in pools and hot tubs measures the concentration of an artificial sweetener in the water.
- Chemistry
Scientists Say: Atomic number
How do you know where an element sits in the periodic table? Count its protons to get its atomic number.
- Environment
Did your burger come with a side of non-degrading pollutants?
Perfluorinated compounds pollute the environment and might harm human health. A new study shows that one place they often show up is the paper and cardboard used to package fast foods.
- Chemistry
Explainer: What is a catalyst?
Catalysts are used in manufacturing and many technologies. They’re also found in living things. They help chemical reactions move along.
- Chemistry
Scientists claim to have turned hydrogen into a metal
Most people know hydrogen as a gas. But under high pressure, scientists now think they’ve converted it into a reflective metal. Not everyone is convinced.
- Tech
Magnets may one day cull deadly germs from blood
A new technique for slowing the deadly condition called sepsis would use tiny iron particles and magnets.
- Tech
How to spin synthetic spider silk
A new method for spinning artificial spider silk combines parts of proteins from two species and mimics what happens in a spider’s silk-forming gland.
- Chemistry
Here’s how hot water might freeze faster than cold
There’s a new explanation for how hot water freezes faster than cold water. But not everyone agrees it’s right, or that the effect can happen at all.
