There’s invisible, undetectable stuff all around us, and we call it dark matter. There’s plenty of evidence that this stuff is very real, but what exactly is dark matter? How do we know it’s there? And how are scientists looking for it?
In an article in Bioscience Hypotheses, researchers suggest that hormones and chemicals resulting from happiness, depression and other mental states can affect our eggs and sperm, causing lasting changes in our children at the time of conception.