It is estimated there are around 422 trees per person on the Earth

Tree numbers halved since civilisation began

02 Sep The number of trees on Earth has almost halved since the beginning of human civilisation, with 709 million trees in Ireland, equating to 154 for each person, a new assessment has found.

Barack Obama said this 'must be the year that the world finally reaches an agreement to protect the one planet we've got'

Obama calls for progress on climate change

01 Sep US President Barack Obama has said world leaders must agree to cut carbon emissions at a UN summit in December because the climate is changing faster than efforts to curb global warming.

Cigarette butts, sweet papers and chewing gum most common forms of litter

Dublin city centre near bottom of litter rankings

31 Aug Killarney is the cleanest town in Ireland according to the latest survey on litter, but Dublin city centre has dropped down the rankings and sits near the bottom of the table of 40 towns and cities.

Petronas has plans to build a giant liquefied natural gas terminal on Canada's west coast

Fracking linked to earthquake in Canada

27 Aug Fracking by a Canadian subsidiary of Malaysian oil and gas giant Petronas triggered one of the world's largest earthquakes linked to the controversial practice, Canadian media reported last night.

A fire at the Oxigen facility in Ballymount, Dublin was the only incident classified as 'serious'

Odour and noise lead complaints to EPA

26 Aug Problems with odour and noise nuisance from industrial and waste facilities were the leading reasons for complaints from the public to the Environmental Protection Agency last year, the body said this morning.

A firefighter moves away from a tall flame as he uses a drip torch to burn dry grass during a backfire operation to head off the Rocky Fire

Evacuations ordered over California wildfire

04 Aug A wildfire that has destroyed drought-parched terrain in northern California with remarkable speed continues to rage as evacuations expanded and firefighters began to gain some ground against the flames.

International outcry over death of Cecil the lion

Three US airlines ban trophy hunter shipments

04 Aug Three US airlines have banned the transport of lion, leopard, elephant, rhino or buffalo killed by trophy hunters, in the latest fallout from the killing of Zimbabwe's Cecil the lion last month.

President Obama's plan will increase the required cuts in carbon emissions from the power sector

Obama unveils new climate change plan

03 Aug US President Barack Obama challenged America and the world to step up efforts to fight global warming today, at the formal unveiling of his plan to cut carbon emissions from US power plants.

Jericho was photographed by the WildCRU research team (Pic: WildCRU)

Jericho the lion 'alive and well'

02 Aug Jericho the lion, who it had been claimed was shot dead yesterday by poachers at a park in Zimbabwe, is "alive and well", conservationists have confirmed.