The decline in oil prices should be helpful to the world economy, albeit with caveats. Photograph: Getty/iStockphoto

What does the decline in oil prices mean for the world economy? The answer depends on why it has happened and how long it might last. But overall it s(...)

Oil prices are now languishing at less than $80 a barrel mark, around 30 per cent below a peak they hit in June and from which they have fallen with i(...)

OxyMem managing director Wayne Byrne

UCD spin out OxyMem has won the Sustainable Energy Authority of Ireland (SEAI) Innovation Award which recognises organisations that are implementing i(...)

Brent crude fell to $79 a barrel on Monday following news Japan, the world’s fourth-biggest crude importer, had slipped into recession. Photo: Bloomberg

Brent crude fell to $79 a barrel on Monday following news Japan, the world’s fourth-biggest crude importer, had slipped into recession and after comme(...)

A file pictured  from January  2013, shows a large statue of a giant panda darkened by heavy smog in Beijing, China. Intensive talks over the past year or more led to Wednesday’s historic announcement in Beijing that the US would cut its emissions by up to 28 per cent by 2025 while China said its emissions would peak in 2030 or earlier. Photograph: Diego Azubel/EPA

Tackling climate change always boiled down to what the world’s two largest economies and biggest emitters of greenhouse gases – the US and China – wer(...)

A trader watches his screen on the floor of the New York Stock Exchange yesterday. US stocks fluctuated, after the Standard and Poor’s 500 Index produced its biggest two-day gain since April, as investors watched geopolitical developments and energy shares sank. Photograph: Reuters

Both European and US stocks fell with the euro amid concern over conflicts in Ukraine and the Middle East. German investor confidence, reported by the(...)

A woman walks through flood water in Cork city recently. Photograph: Niall Carson/PA

It is tempting to imagine that a sea change in Ireland’s on-again, off-again relationship with the reality of climate change has occurred in re(...)

The International Energy Agency  said US oil demand grew by 390,000 barrels a day last year, or 2 per cent, reversing years of decline. Photograph: Inpho

US demand for oil grew by more than China’s last year for the first time since 1999, according to the International Energy Agency, giving the stronges(...)

Greenpeace activists throw coal in the air during a protest in front of the Polish Economy Ministry headquarters building against the World Coal Summit and the 19th conference of the United Nations Framework Convention on Climate Change (COP19) in Warsaw yesterday. Photograph: Reuters

Most of the world’s coal reserves “will have to stay in the ground” and further investment in mines and coal-fired power stations could go ahead on(...)

The International Energy Agency said that while oil markets look well supplied in the short term, prices could rise in the next few months due to a seasonal increase in demand. Photograph: Dimas Ardian/Bloomberg News

Brent oil held above $108 a barrel today, heading for its biggest weekly gain since early July on expectations the Federal Reserve will stick with its(...)