▁of ▁the ▁show . ▁ ▁T riv ia ▁Total ▁number ▁of ▁days ▁on ▁air : ▁ 3 1 2 ▁days ▁Total ▁number ▁of ▁hous em ates : ▁ 7 4 ▁H ous em ates ▁Total ▁number ▁of ▁hous em ates ▁that ▁walked : ▁ 6 ▁H ous em ates ▁Total ▁number ▁of ▁e jections ▁: ▁ 3 ▁H ous em ates ▁ ▁See ▁also ▁ ▁Big ▁Bro ther ▁television ▁series ▁ ▁External ▁links ▁ ▁South ▁Af ▁Category : S outh ▁African ▁reality ▁television ▁series ▁Category : M - Net ▁program mes ▁Category : 2 0 0 1 ▁South ▁African ▁television ▁series ▁deb uts ▁Category : 2 0 0 0 s ▁South ▁African ▁television ▁series <0x0A> </s> ▁Em ily ▁A . ▁We iss ▁is ▁the ▁Mark ▁and ▁Nancy ▁Rat ner ▁Professor ▁of ▁Chem istry ▁and ▁Director ▁of ▁the ▁Ph oto - S ci ences ▁Research ▁Center ▁at ▁North western ▁University . ▁Her ▁research ▁cons iders ▁the ▁optical ▁and ▁electronic ▁properties ▁of ▁nan ost ruct ures , ▁including ▁hy brid ▁organ ic – in organ ic ▁quantum ▁d ots . ▁She ▁was ▁a ▁two - time ▁final ist ▁in ▁the ▁B lav at nik ▁Awards ▁for ▁Young ▁Scient ists . ▁ ▁Early ▁life ▁and ▁education ▁ ▁We iss ▁earned ▁her ▁under grad uate ▁degree ▁at ▁Pr inc eton ▁University ▁and ▁graduated ▁in ▁ 2 0 0 0 . ▁Wh ilst ▁she ▁initially ▁major ed ▁in ▁English , ▁We iss ▁took ▁courses ▁in ▁quantum ▁mechan ics , ▁and ▁became ▁increasing ly ▁interested ▁in ▁chem istry .