Kenyan scientists are embroiled in a deepening controversy over whether Kenya should lift a ban on the pesticide DDT in a bid to reduce deaths from malaria. A government-commissioned taskforce is poised to reveal its advice on whether the pesticide should be reintroduced. Meanwhile sharp divisions are appearing between two of the country's leading research organisations, the Kenya Medical Research Institute (KEMRI) and the International Centre of Insect Physiology and Ecology (ICIPE), both based in Nairobi.