World at Risk - Year 12 Edexcel Geography

Better forecasting of where the wind is blowing could allow British fossil fuel power stations to be switched off and counter critics' claims that wind power is too intermittent.

The head of the UN's Population Fund, Babatunde Osotimehin, talks to Annie Kelly about the key issues driving the debate around population and food security

Our global approach to impending environmental crisis needs an urgent shakeup. Here are my suggestions for climate negotiators

If you want to see global warming's signature, look to the Arctic. Up north, the air is warming and the ice is melting. As all of that reflective ice goes away, the Arctic Ocean is soaking up more sunlight, further enhancing warming. Melting Arctic ice is also contributing significantly to sea level rise.

Europe's forests can play a key role in helping mitigate the impact of climate change, a report described as the most comprehensive of its kind concludes.

Global warming could be slowed down if governments cleaned up what's known as black carbon from industry and cooking fires, 50 of the world's leading atmospheric scientists said on Tuesday.

What a difference a year makes. In February 2010, climate sceptics were crowing about apparent admissions from Phil Jones at the Climate Research Unit (CRU) in Norwich, UK, that warming trends over the period 1995 to 2009 were "not statistically significant"

Nearly half of the UK's top companies do not have targets on greenhouse gas emissions, despite years of legislation and campaigning on the issue, a study by the Carbon Trust has found.

Humans have transformed Earth beyond recovery - but rather than look back in despair we should look ahead to what we can achieve

On the eve of climate talks that began last week, the UN's climate chief, Christiana Figueres, told the Guardian: "We are putting ourselves in a scenario where we will have to develop more powerful technologies to capture emissions out of the atmosphere."

Lighter-coloured crops, aerosols in the stratosphere and iron filings in the ocean are among the measures being considered by leading scientists for "geo-engineering" the Earth's climate, leaked documents from the UN climate science body show.

Africa, notoriously, has the worst roads in the world because its extremes of sun and rain bake them dry or leave them cratered and impassable for months at a time. The whole continent, which is physically larger than China, western Europe, India and the US together, still only has 171,000 km of all-weather roads - less than a country like Poland.

Keynote abstracts ahead of a geo-engineering expert group meeting in Lima in Peru next week

Australia is often cited as being particularly vulnerable to climate change, with projections of longer droughts punctuated by increasingly horrendous floods. In Western Australia, rainfall has already declined by 20%, and the tragic "Black Saturday" bush fires that claimed 173 lives in 2009 were amplified by an unprecedented heatwave. It is less well known that Australia is also a coal "superpower," being the world's largest exporter of this dirtiest of all fossil fuels.

Televisions could be left on standby without wasting energy, say the makers of the new microchip.

The eerily lethargic sun shows no signs of perking up, solar physicists say. The sun may wallow in inactivity for the next decade - or longer, which could affect Earth's climate as well as the health of orbiting satellites.

Enjoy our stormy sun while it lasts. When our star drops out of its latest sunspot activity cycle, the sun is most likely going into hibernation, scientists announced today.

ADD one more to the list: after the driest spring in more than 20 years, parts of eastern England are officially in a state of drought, according to the UK's Department for Environment, Food and Rural Affairs. This comes hard on the heels of some of the worst droughts on record across the globe, from Texas to China.

Over the last few years, the politics of climate change have been amply forged in the fires of a changeable Sun.

Reducing nuclear will cost much more, be less sustainable and there will be less energy security says IEA chief Nobuo Tanaka