Chemistry

Experts explain the differences between popular retinol products and the way they trigger molecular changes deep in the skin

Scientists propose that large chunks of gold could form from earthquakes’ pressure

New evidence points to a carbonaceous asteroid from the outer solar system as the culprit for Earth’s most recent mass extinction

This chemistry professor helped police around the world solve arsons and homicides

Ultrathin gold was achieved with the help of a century-old sword-making technique

Chemists are hard at work figuring out how to make tattoos last—and ensure they’re safe.

Promethium, one of the rarest and most mysterious elements in the periodic table, has finally given up some crucial chemical secrets

A number of whole-body deodorants are coming to market. But are they safe and effective?

Regulating chemicals one-by-one has allowed the tobacco industry to skirt menthol bans by creating new additives with similar effects but unclear safety profiles

Recycled materials contribute to a pollutant-neutralizing paint

New research into weed reveals how a lemon-scented terpene can ease anxiety without reducing the high.

Scientists think they’ve cracked the long-standing mystery of attraction among particles with a similar charge