In the category "Science" we currently track items of 64 persons. The most popular ones, by number of traded items, are:

Jane GoodallThomas EdisonEdward Teller
J.T. ThomasBill GatesJonas Salk
James WatsonLinus PaulingSteve Jobs
Denton CooleyMichael DeBakeySimon Lake
Martin CooperJack KilbyClyde Tombaugh
Charles TownesAlbert EinsteinCarl Sagan
Tim Berners-LeeBill Nye 

You can find all people that we're currently tracking items for in the alphabetical index:
A    B    C    D    E    F    G    H    J    K    L    N    P    S    T    V    W