Drug discovery involves identifying therapeutic targets, designing lead compounds, and developing drugs through testing, modeling, and clinical trials. Molecular modeling helps determine physicochemical properties in computer-aided drug design. Food colors can be natural, derived from plants and foods, or artificial, produced from petroleum. They serve purposes like identification, preservation, and decoration, but some artificial dyes have been linked to health issues like cancer and hypersensitivity. Both industries rely on identifying safe and effective ingredients through research on properties, applications, and human health impacts.