DNA breaks occur as both single and double strand events; double strand breaks are difficult to repair correctly and can lead to mutations. DNA damage from endogenous factors can include free radical formation from mitochondrial respiration and metabolism; exogenous factors include chemicals, ionizing ...
Freezing water is a basic task that everyone should know how to do. Even if you know how to make ice, you may not realize how many tricks there are to do the job faster and more efficiently. So if you're ever in need of a nice cold drink...