There are telltale signs that your car's lead acid battery might need water replenishment. Maintenance-free or valve-regulated lead-acid batteries (VRLA) are the types that don't need watering, hence ...

"Even very complex organic chemistry is compatible with concentrated sulfuric acid." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Life as we ...

Rolls of brightly colored plastic. After it is used and discarded, polylactic acid could be used as a feedstock for making the amino acid alanine. Credit: Shutterstock One of the simpler amino acids, ...