In the category "Science" we currently track items of 70 persons. The most popular ones, by number of traded items, are:

Jane GoodallThomas EdisonEdward Teller
Bill GatesJonas SalkJ.T. Thomas
James WatsonLinus PaulingSteve Jobs
Denton CooleyAlbert EinsteinMichael DeBakey
Simon LakeMartin CooperJack Kilby
Clyde TombaughTim Berners-LeeCharles Townes
Carl SaganBill 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