16 Sherpas died in the avalanche 12 months ago

Everest Sherpas remember avalanche victims

18 Apr Hundreds of mountaineers and Sherpas in Nepal have paid tribute to 16 of their fellow guides who died in an avalanche on Everest a year ago, suspending climbing for the day.

Indian Prime Minister Narendra Modi (R) receives a sapling from Environment Minister Prakash Javadekar at a conference on the environment

India launches air quality index

06 Apr India's government launched a new air quality index today, following intense pressure to act after the World Health Organisation declared New Delhi the world's most polluted capital.

The president had visited the devastated Atacama region and nearby Antofagasta

10 dead, 19 missing in Chilean floods

28 Mar Chilean President Michelle Bachelet has said that the situation was "bleak" in the country's flood-hit north after 10 people were killed, 19 missing and hundreds were left homeless.

Residents in around 75 homes in the Moyola Park estate have been told not to drink water from the public supply

Warning over water contamination in Galway

26 Mar Irish Water has said a public alert for householders in a Galway estate will not be lifted until there is absolute certainty that the supply is free of kerosene contamination.

15,000 water meters have been installed in Dún Laoghaire-Rathdown so far

Lead may be in water supply to 8,500 Dublin homes

24 Mar The drinking water in as many as 10% of households in the Dún Laoghaire-Rathdown area of Dublin may be contaminated by lead, according to a survey of pipes conducted by water meter installers.

23 meetings took place between Bord Gáis and the Department of the Environment between April and September 2012

No record kept of 2012 Irish Water meetings

22 Mar No notes or records were kept at a series of high-level Irish Water meetings in 2012, between the then Environment Minister Phil Hogan and the Bord Gáis chairperson, Rose Hynes, according to documents seen by RTÉ's This Week.

Arctic sea ice usually reaches its annual maximum in March and shrinks to its smallest in September

Arctic sea ice recorded at new winter low

19 Mar Arctic sea ice has set a new winter record by freezing to the smallest maximum extent in satellite records dating back to 1979 in new evidence of long-term climate change, US data has showed.