These are a normal by-product of mitochondrial activity, but are usually mopped up by special enzymes before they can escape and cause harm—for instance, by damaging a cell's DNA.

They were soon gone again, rising from their seats with an activity which took their brother by surprise, and hurrying off as if eager to escape from Mrs. Bennet's civilities.

Although there has been no real activity on ESCAPE recently, it's not dead or forgotten - it's just that our real jobs have gotten in the way (again).