鈥淧ersonally I don鈥檛 know anyone who has died of AIDS. I really, honestly don鈥檛.鈥�
South African president Thabo Mbeki. Several members of his party, including his own spokesman, have died of AIDS (The Washington Post, 25 September)
鈥淭hey鈥檝e had an incredible impact on high-end hotels. If the word 鈥榖edbug鈥� gets out, it scares a lot of people away.鈥�
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Entomologist Mike Lawton of the Californian company Western Exterminator on the return of the bedbug (AP, 29 September)
鈥淎 wasteful programme such as the planned moon landing is a giant misstep for China.鈥�
Yu Maochun of the US Naval Academy (Reuters, 29 September)
鈥淭he person who relies exclusively on suncream could be in a lot of trouble in terms of skin damage.鈥�
Mark Birch-Machin of Cancer Research UK on a study showing suntan lotions do not provide enough protection against UVA rays (The Guardian, London, 30 September)
鈥淚f we cannot have full disclosure, I鈥檒l have to say that I am not able to verify the Iranian statements [that their nuclear programme is purely peaceful].鈥�
International Atomic Energy Agency head Mohamed ElBaradei (Reuters, 30 September)
鈥淲e want the air quality forecast to be like the weather forecast, something people check every day.鈥�
Chet Wayland of the US Environmental Protection Agency, which will now issue daily alerts (USA Today, 30 September)