This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American On Monday, the Onion reported that the ...

Progesterone is a hormone that supports menstruation and pregnancy. It typically rises during pregnancy and while using some birth control medications. Low levels can affect menstruation and fertility ...

Mitochondria (mitochondrion, singular) are membrane-bound organelles found in the cytoplasm of almost all eukaryotic cells but are absent in prokaryotic cells. The main function of mitochondria is to ...

Hormones coordinate different body functions by carrying messages through the bloodstream to target cells and tissues. Hormonal imbalances occur through inadequate or excess hormone synthesis, which ...

Microsoft Excel functions provide a practical starting point for working with spreadsheet formulas. This selection of five ...

A PowerPoint I made to take my Year 10s through the new GCSE topic on Functions. Starts with simple function notation and substitution, before moving on to composite functions - both numeric and ...