Wild Geese: Norway-based marine ecologist Mark Costello says the West is slow to appreciate the need for sustainability

Reports that man was paid to take doses on behalf of other people

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People currently aged 14 and under will never be able to legally purchase tobacco

Cautious strategy combined with risks of fast-spreading strains presents dilemma

Decision will be based on how system is coping, and whether numbers are sufficiently positive

RCSI world number one under health and wellbeing category in Times rankings

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Four day fire prompts fear climate change has caused nation to become ‘more flammable’

President says two nations should share information on agricultural economies

Weasels, opossums among animals to be killed off by 2050 under ‘ambitious’ plan

Since the pioneering experiments of Nikola Tesla, wireless power transmission has been a dream, but is likely to breakthrough soon

From elephants and giant squid to tiny mites and microbes, how many species live on Earth? Does it matter more to find out all there are, in the hope of conserving more of them, or to try to protect those we already know about?

Marine Institute and IFI cite scientific evidence for opposing views on effect of sea lice on wild stock mortality rates