The ultimate climate change FAQ

Planting new forests can help absorb CO2 from the air but only at a rate sufficient to offset a small proportion of current emissions

Climate change will increase the risk of drought conditions in some regions but there is lots of uncertainty about the extent, timing and severity of these changes

Hydrogen will be very a useful means of storing and distributing clean energy as the world moves away from fossil fuels

Climate change is expected to lead to greater risks of flooding in many areas but the details are very difficult to predict

The pros and cons of onshore wind energy are the subject of debate in the press and among politicians

Global warming is already affecting farmers worldwide; future impacts will vary by region, crop and temperature

A carbon price is a cost applied to carbon pollution to encourage polluters to reduce emissions

The idea that those who produce pollution should bear the cost underpins most of the regulation affecting land, water and air

Energy efficiency means using less energy to achieve the same ends – though rebounds effects can reduce the savings

Two errors were discovered in the IPCC's latest assessment report but the world's science bodies have backed the organisation