Post-2015 discussions offer a chance to link the environmental and development agendas — it shouldn't be bypassed, says Myles A. Wickstead.

Funding for programmes that target major diseases should be matched by investment in the health systems that underpin them, says Ghana's Irene Akua Agyepong.

By measuring the right things, health providers can improve HIV response and save lives, says Stefano Bertozzi of the Gates Foundation.

S&T advances should safeguard health, equity and the rights of vulnerable populations, says rural development professional Bhavani R. V.

Development programmes must move away from top-down approaches to empower networks of activity, argues USAID Administrator Rajiv Shah.

There are five key principles to ensuring that post-MDG development meets the needs of low-income populations, argues David Satterthwaite.

Debates surrounding new sustainable development goals should pay attention to lessons learned from the MDGs, argues Jeffrey D. Sachs.

Sustainable development targets will work only if they engage with the realities of national politics, says policy expert Matthew Lockwood.

Rio+20 must launch SDGs to guide countries through complex development challenges, argues Colombian ministry official Paula Caballero Gómez.

We need to revive the rights-based agenda and realign research priorities for women's health, says Priya Shetty.

Next month's meeting in Brazil needs send the right signals to encourage progress on sustainability, says ODI's Claire Melamed.

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

The proposed Sustainable Development Goals need more focus on health to continue the progress achieved with MDGs, argues Priya Shetty.

Few science centres offer hands-on experience for young people in Africa. Support is needed for an expansion plan, says Graham Durant.

Development economist Lawrence Haddad argues that improving nutrition can, and should, be a central goal of agriculture.

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

Africa should reverse its brain drain and use good governance to ensure development, argues Nobel winner Wole Soyinka.

Priya Shetty discusses why biomedical research is vital in steering progress towards the Millennium Development Goals.

International co-operation and better early warning systems are key to tackling alien invasive species, says Achim Steiner.