Stop painting cells and use conditional formatting to build accessible, formula-ready, and automated Excel spreadsheets.

Build stable, high-performance dashboards using REPT formulas and UNICHAR symbols instead of conditional formatting.

For almost 60 years, scientists have tried to understand why DNA doesn't replicate wildly and uncontrollably every time a cell divides, which happens constantly. Without this process, we would die.

Every second, millions of cells in your body divide in two. In the space of an hour, they duplicate their DNA and grow a web of protein fibers around it called a spindle. The spindle extends its many ...