Every scientific paper ever written was authored by someone. They could be in your family tree. If so, or if you are involved in a one name study, easily searcheable digital archives can make the investment of a few minutes worthwhile. You might also want to investigate what science says about an event in which an ancestor was involved, such as the 1918 influenza pandemic, or see if a location of family significance is mentioned. If you get into it the few minutes could easily stretch to hours.
For the first time, the Royal Society is making the complete archive of its journals, the earliest of which goes back to the 17th century, available online. Access will be free for two months. The list of journals is here.
Notice of this availability was found in the GENBRIT-L Rootsweb newsgroup.