We need a clearer understanding of disease patterns and ecosystem impacts before embarking on eradication strategies, says Ummer Rashid Zargar.

Encouraging the spread of probiotic foods that promote healthy gut bacteria could help developing countries tackle obesity, says Kingsley Anukam.

A test for malaria caused by Plasmodium knowlesi exists, says Balbir Singh, but it isn't routine in rural areas where the disease is common.

The developing world needs 'big projects, not small ideas' — and nuclear power is a viable and necessary solution, argues Marje Hecht.

Warea Orapa says that tilapia fish — hailed as a method of controlling mosquitoes — can cause damage when introduced into new ecosysems.

There is little resistance to the pesticide pyrethrum at present, but use in bednets could change this, says Christiaan Kooyman.

Alexander Boksenberg argues that the unique potential of UNESCO's science strategies is substantial.

Cristobal Valencia Ramirez describes Venezuela's take on innovation and enterprise, pointing out that its policies have been in place for at least five years.

Sam Lanfranco argues that the fame of the One Laptop Per Child initiative has prevented more worthy initiatives from receiving the media attention they deserve.

Wagdy Sawahel argues that it is not Islam, but Muslim leaders and policymakers who are to blame for the lack of scientific progress in the Islamic world.

Rhett Harrison says the burning peat swamps of Borneo are not just an Indonesian problem nor solely due to weak governance.