PUBLIC MARKS from Newspartnergroup with tag "global warming"

The polar bear just got listed as a threatened species, but veteran polar explorer Will Steger and the team he's leading in the Canadian Arctic found themselves threatened - by the bears.

If the most dire climate forecasts come true the tourism industry in Europe's far north, already feeling the effects of global warming, may find itself promoting a Santa in shorts and a camel-drawn sleigh.

Burning coal, oil and gas adds carbon dioxide to the atmosphere, the same gas used to give soft drinks fizz. Just as carbon dioxide is absorbed into the drink, ocean water absorbs it from the air. When the carbon dioxide enters the ocean, it makes the water more acidic. That interferes with the ability of coral to calcify their skeletons: They can no longer grow and they begin to die.

The extreme cold weather in the past centuries has coincided with wars, population collapse and economic crises. The ratio of wars in a cold climate was almost double the ratio of wars in a warm climate and periods of social turmoil over the centuries coincided with extreme weather.

The Arctic is rich in natural resources, including hydrocarbons, and rapid thawing due to global warming could make exploiting those mineral resources feasible relatively soon.

Rising temperatures could wipe out more than half of the earth's species in the next few centuries, according to researchers who published a study on Wednesday linking climate change to past mass extinctions.

In a statement, Antonio Hill, Oxfam's senior advisor on climate change said by 2020, yields from rain-fed agriculture in some countries could decrease by as much as 50 per cent exacerbating malnutrition and food insecurity.