Cleo a white Bengal tiger looks through the glass of her enclosure at the Buenos Aires Zoo, Argentina,. Photograph: Natacha Pisarenko/AP

See more photo highlights of the day 

Photo highlights of the day

Above: Kangaroo sunbathing at Hangzhou zoo, China. Photograph: Imaginechina/Rex Features

Climate change a threat to security, food and humankind - IPCC report

A United Nations report raised the threat of climate change to a whole new level on Monday, warning of sweeping consequences to life and livelihood.

The report from the UN’s intergovernmental panel on climate change concluded that climate change was already having effects in real time – melting sea ice and thawing permafrost in the Arctic, killing off coral reefs in the oceans, and leading to heat waves, heavy rains and mega-disasters.

And the worst was yet to come. Climate change posed a threat to global food stocks, and to human security, the blockbuster report said. Read more

Pictured: Flooding in Pakistan in 2010. Photograph: Asif Hassan/AFP/Getty Images

Earthquakes, hurricanes, cyclones and tsunamis: the world’s 10 riskiest cities

What are the world’s riskiest cities when it comes to natural disasters? A reinsurance company set out to assess 616 cities around the world for their risk of earthquake, hurricanes and cyclones, storm surge, river flooding and tsunami. See more

Pictured: Victoria harbour in Hong Kong. Photograph: Philippe Lopez/AFP/Getty Images

Snake eats crocodile in Queensland lake

A snake has eaten a crocodile in an epic duel captured by onlookers at a Queensland lake.

The whopper python took on the croc at Lake Moondarra, near Mount Isa, on Sunday. A Mount Isa woman, Tiffany Corlis, was having breakfast nearby when canoeists racing on the lake alerted her about the endurance battle playing out nearby. Read more

Photograph: Tiffany Corlis/ABC North West Queensland/AAP

Bitter cold turns caves on Great Lakes into stunning ice sculptures – in pictures

It’s been so cold for so long in the midwest that the Great Lakes are almost completely covered with ice. The last time they came this close was in 1994, when 94% of the lakes’ surface was frozen. As of Thursday, ice cover extended across 88%, according to the federal government’s Great Lakes Environmental Research Laboratory in Ann Arbor. See more

Photos: Brian Peterson/AP

Indonesian volcano eruption claims lives after villagers allowed to return

The death toll from an Indonesian volcano that has been rumbling for months rose to 16 on Sunday after rescuers found another charred corpse and a critically injured college student died in a hospital, officials said.

Mount Sinabung erupted again Saturday just a day after authorities allowed thousands of villagers who had been evacuated to return to its slopes, saying volcanic activity was decreasing. Read more

Photograph: Reuters

Don’t look down: a glimpse at the world’s scariest hikes

From sky-high planks to iron-cable pathways, we take a look at some of the scariest hikes around the globe. See more

Pictured: The Italian Dolomites (above) have a huge array of nerve-racking mountain routes. Photograph: Alamy

Great snakes! California home found packed with pythons

A schoolteacher has been arrested after hundreds of living and dead pythons in plastic bins were found stacked floor to ceiling inside his stench-filled suburban California home.

As investigators wearing respirator masks carried the reptiles out of the house by the score and stacked them in the driveway, reporters and passers-by gagged at the smell. Some held their noses or walked away from the five-bedroom home to get a breath of air. Read more

Photograph: Wayne Lynch/Getty Images/All Canada Photos

Photo highlights of the day: A 63-year-old elephant enjoys a dip in the Indian Ocean. See more of the best photographs from around the world

Photograph: Mike Korostelev/Solent News & Photo Agency/Solent News