Seasonal markers need to be revised to take account of climate change, a study suggests.

Tropical cyclone damage costs are set to increase dramatically because of climate change, and population and economic growth, says a study.

Software applications, or apps, that help solve East African farmers' climate problems have received cash prizes in the Apps4Africa competition.

Higher temperatures could decrease wheat yields by causing the crop to age prematurely.

Ocean acidification caused by human activities is likely to hit the Caribbean and west tropical Pacific regions the most.

A report by the UN secretary-general's panel on global sustainability adds weight to calls for more science in policymaking.

Engineers want the Rio+20 summit proposals to give more emphasis to the role engineering plays in driving sustainable development.

Bhutan has successfully brought down malaria cases, but fears reversals from global warming.

Pacific islanders are at much higher risk of ciguatera fish toxins than previously thought, and the number of sufferers is increasing.

Nepal plans to expand its household biogas programme, a model for developing countries, into commercial use.

Mountain glaciers in Peru are melting quickly, which could result in a water shortage long before the expected 10-30 years, says a study. 

Researchers have engineered microorganisms to break down the sugars in seaweed into ethanol, creating a potential new source of renewable fuel.

African smallholders could benefit from both cash crops and carbon payments by planting trees such as mango and cashew around their homes.

Biodiversity influences how well a dryland ecosystem functions, and therefore how it will respond to climate change, say scientists.

Japan is to help Vietnam develop a satellite programme to help combat the effects of climate change and natural disasters.

Cutting methane and soot emissions could quickly tackle climate change while boosting crops and health, says a study.

Trees can influence the local climate, but they are being left out of global climate models and predictions, according to scientists.

Campaigners welcome plenty of science in the first draft of the planet's environmental negotiations, but say there are omissions.

Developing countries could prepare better for extreme weather events if they used more than one weather model, say scientists.

A new book on the vulnerabilities of Pacific island fisheries to climate change finds that although some will benefit more are at risk.