Chemistry

What dermatologists say about sun sensitivity, cancer risk and the products they use for sun protection

The long-awaited discovery of oxygen 28 might prompt physicists to revamp theories of how atomic nuclei are structured

A chemist breaks down how hair follicles respond to summer heat and humidity

A new type of chemistry performed at very cold temperatures on very small particles enables quick, precise reactions

Researchers used a smoking machine to test the intensity of marijuana rolled into joints

Scientists have used quantum technology to track individual particles of light as they begin the process of photosynthesis

The periodic table, as well as evolution, won’t be taught to under-16s in India as they start the new school year

The damaging effects of accidents like the Ohio train derailment would be minimized if industry would commit to developing safer chemical processes and products

A train carrying toxic and combustible materials derailed recently in Ohio. Here’s what we know about the situation—and what we can’t know yet

The “amorphous” solid is denser and could be water “frozen in time”

Mineral deposits called “lime clasts” found in ancient Roman concrete give the material self-healing capabilities that could help engineers develop more resilient modern concrete and reduce its associated emissions

Minuscule motor molecules could emit light as they journey into cells