A waste burning plant proposed for the Rothcoole area of Co Dublin has attracted criticism from the local authority.
The amount of rubbish local authorities have to collect and send to landfill dropped slightly during 2007.
Acid rain caused by industrial pollution could actually help reduce the greenhouse gas emissions of agriculture, say scientists.
Cities on rivers are most at risk from rising water caused by climate change, according to a report from the UN and the World Bank.
Recycled concrete and stone material from the demolition of flat blocks in Ballymun has been used in other building works, according to contractors.
Firms in Northern Ireland are to benefit from a Euro 4.9m scheme to help them cut their energy bills.
New guidance is being developed on turning used lubricating oils into a cheaper alternative to virgin fossil fuels - and industry is being asked for its views.
A six million pound grant to clean up contaminated land and help return it to use has been announced by the Welsh Assembly Government.
American environmental regulators are looking into the effects of low level residues of drugs in drinking water and working with healthcare professionals to see how levels might be reduced.
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