Chemistry
- Chemistry
Amino acid lends a heavy hand
Scientists have identified a mechanism to explain how amino acids evolved to become exclusively left-handed in all living organisms.
- Chemistry
Amending the Genetic Code: Yeast adds new amino acids to its proteins
Researchers have created yeast cells that add one of five unnatural amino acids to their natural 20-piece construction set.
- Chemistry
Old Martian questions may have new answer
Researchers simulating Martian conditions in a test tube discover a likely reason why no organic molecules have yet been found on the surface of the Red Planet.
- Chemistry
Chemical rings act as a minirotor
Interlocked molecular rings form new minirotors, including some in which scientists can control the rotational direction.
- Chemistry
An inexpensive catalyst generates hydrogen
A new, inexpensive catalyst could make hydrogen generation cleaner.
- Chemistry
Additive gives improved mileage, less smog
A new fuel additive, polyisobutylene, decreases automobile emissions by 70 percent while increasing power and mileage.
- Chemistry
Danger Detection
Analytical chemists are exploring ways to improve chemical and biological weapons detection.
- Chemistry
Multiple Motions: Applied electrons make molecules vibrate and move
A new technique enables scientists to choreograph individual molecules to vibrate, break bonds, and move on a surface in specified ways.
- Chemistry
Detecting Lead: Sensor changes color for toxic metal
A new sensor using gold nanoparticles and tailor-made DNA strands offers simple and reliable detection of lead in paint.
- Chemistry
Diamond in the rough
Researchers have found a collection of previously undiscovered diamondlike compounds in oil.
- Chemistry
Drug smugglers leave cellular tracks
Imaging reveals where some experimental nanoscale capsules ferry drugs when they enter cells.
- Chemistry
Plastic Electric
Scientists are finding new ways to improve the molecular order and electrical conductivity of a commercially important conducting plastic.
