Chemistry
- Chemistry
Where the Gems Are
By using a novel tool to figure out an emerald’s oxygen-isotope ratio, gemologists can now determine which mine the precious stone came from and, possibly, gain insights into the formation and history of these coveted gems.
- Chemistry
Money Allergies: Two-toned euro coins shed metallic allergen
The two-alloy composition of some euro coins makes them release large amounts of nickel, a common skin allergen.
- Chemistry
Rooting for new antimicrobial drugs
A compound from a tree found throughout tropical Africa could prove useful as a topical antifungal medication.
- Chemistry
Wine Tasting: Instrument can sniff out vinegar in sealed wine
A new system could determine whether a sealed bottle of wine has turned to vinegar.
- Chemistry
Germ Fighter: Lens coating may keep contacts in eye longer
A new antibacterial coating may allow contact lenses to remain in a person's eyes for up to 3 months.
- Chemistry
Down to the bone
A new method for making bone cement could simplify hip and knee replacements and improve the surgeries' outcomes.
- Chemistry
Power plants: Algae churn out hydrogen
Green algae can produce hydrogen, a clean-burning fuel that could one day power pollution-free cars.
- Chemistry
Don’t eat the pepper-flavored paint
A derivative of the spicy chemical in chili peppers could find its way into a variety of products, including veterinary sutures and fiber optic cables.
- Chemistry
Glowing bacteria gobble gook in soil
A genetically engineered bacterium lights up as it breaks down organic contaminants in soil.
- Chemistry
Volcanoes aren’t a big source of CFCs
Ozone-depleting chlorofluorocarbons in the atmosphere come mainly from human-made sources, not from volcanoes as some have suggested.
- Chemistry
Stopping batteries from starting fires
A new flame-retardant substance could make rechargeable lithium-ion batteries practical for powering electric vehicles.
- Chemistry
Questions of Origin
Two new studies renew controversy about the authenticity of a map that may be the first depiction of North America.
