Fears climate change and melting ice could lead to rising seas.
Endangered Species Day, observed on Friday 15 May 2015, highlights need for wildlife conservation.
The second earthquake brought down some buildings that were already fragile.
Beautiful blue and pink crayfish is newly discovered species, scientist confirms.
The Larsen C shelf lost an average of 4 metres of ice in 14 years from 1998.
US beekeepers report losing 42% of colonies.
Beekeepers across the US have lost 42% of their colonies over 2014/2015.
Visitors to Nicaragua's Telica volcano found themselves just metres from its massive crater as it spewed dark clouds of ash and gas high into the sky.
Tuesday's earthquake was an aftershock of the massive one that killed thousands on 25 April.
Japan hit by earthquake, buildings shake in Tokyo.
Weather chaos predicted round world due to 'El Niño effect' - not that you'll notice a difference in the UK
The Expo 2015 Future Food District shows how new technologies can be applied at each step of the food chain.
Costa Rica's Turrialba volcano belched a column of ash and smoke up to 656ft into the air on Sunday (10 May).
Earthquake of magnitude 7.3 hits Kodari in Nepal just weeks after 7.8 quake killed thousands.
Environmentalists says move is 'risky and ill-conceived'
Frenchman Yves Berthelot was in 'the wrong place at the wrong time. He had no luck'.
Germany called on its G7 counterparts to show economic opportunity of clean energy.
A new bill is awaiting approval that sets out Hawaii's ambitions to be 100% self-sufficient by 2045
It is an 18% increase on the same period last year.
Three engineering students in Chile have invented a smartphone charger that harnesses power from plants.
Loss of nutrients and carbon stored in the soils poses a double threat to human security.
A tornado in Cisco, Texas has killed at least one person and levelled homes, but elsewhere rain and hail reigns
Everest yet to be analysed, so no one knows how high it is.
Ticks, brain worm thrive in the rising heat.
A tropical storm warning is in effect from South Santee River, South Carolina to Cape Lookout, North Carolina.
Up to 300 people, many of them foreigners, are believed to have been buried by an avalanche in Langtang.
NASA's FINDER device locates four Nepal earthquake survivors buried beneath 10 feet of rubble.
The magnesium, potassium and phosphorus attract the plant to kimberlite soils.
UN had expected 400 ppm mark to be reached much later this year or next.
Critics worry new US rules not strict enough to douse fire threat