• Not everyone knows that there is a right and wrong way to burn a candle. • The first step is to always trim the wick. • Trimmed wicks make for a cleaner burn with less smoky residue.

Now, a report in Angewandte Chemie International Edition suggests that not all nanoparticles produced from candle soot are bad; indeed, some may prove to be useful. Chengde Mao and colleagues at ...