For some people, getting pregnant is as easy as catching cold." And there certainly was an analogy there: Colds and babies were both caused by germs which loved nothing so much as a mucous membrane.

“Stephen Hawking… found it tantalizing that we could not remember the future. Bu…”

“Human beings used to be molecules which could do many, many different sorts of …”

“Derby described the incredible artificial weather that Earthlings sometimes cre…”

“But I replied that what made being alive almost worthwhile for me, besides musi…”