Technological innovation can't be imposed on poor people — they must be engaged to select ideas that suit their lives, writes Lawrence Gudza.

African governments with technology policies that focus only on ICT should rethink their priorities, says Ndubuisi Ekekwe.

Neither dispassionate information nor scare stories are the answer: we need public engagement on health interventions, argues Priya Shetty.

Recent attacks on scientists reveal a real threat, but rhetoric misses the mark — technology is not the problem, says Gerardo Herrera Corral.

Developing countries forging ahead with nanotechnology need regulation and research into local risk patterns, say Alok Dhawan and Vyom Sharma.

Alternative approaches are required if nanotechnology is to boost global health and equity, argues social scientist Donald Maclurcan.

In developing countries nanotechnology for health should improve living conditions, not just treat disease, says Guillermo Foladori.

Regulating nanotech is challenging, says Rajender Varma, but green chemistry could help developing countries 'leapfrog' to cleaner, healthier products.

Nanomedicine requires careful development, not a great rush to jump on the bandwagon, argues nanotech expert Manoj Varma.

Nanotech in hygiene, fake drug detection and remote diagnosis will do more for health than nanodrugs, says Mohamed Abdel-Mottaleb.

Nanotechnology is being hailed as the key to solving Africa's challenges. But proper attention must be paid to its effects, says Kathy Jo Wetter.

Nanotechnology's potential to improve public health will be maximised only with a conducive environment, argues Jayashree Vivekanandan.

Nanotechnology must be effectively shared with stakeholders if it's to deliver clean water, say Thembela Hillie and Mbhuti Hlophe.

Engineering a useable product is the key to making nanotechnology work for water treatment, says Ashok Raichur.

Developing world businesses must invest in nanotech research and development for clean water to stay ahead, says Mohamed Abdel-Mottaleb.

Developing countries are making good progress on nanotech for clean water, say Paulo Sergio de Paula Herrmann Jr. and José Antônio Brum.

Emerging nanotech for purifying water at this stage should be regulated with existing laws, say Malini Balakrishnan and Nidhi Srivastava.

Nanotechnology should be used to develop Cuban pharmaceutical products to prevent them being pushed out of the market, warns an expert.

Technology transfer is central to translating nanotechnology research into benefits for society, says Bai Chunli.