Word: permafrost
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...hard part will be putting this new knowledge into action. It's true that we have a sense of where some of the tipping points for climate change might lie - the loss of Arctic sea ice, or the release of methane from the melting permafrost of Siberia. But that knowledge is still incomplete, even as the world comes together to try, finally, to address the threat collectively. "Managing the environment is like driving a foggy road at night by a cliff," says Carpenter. "You know it's there, but you don't know where exactly." The warning signs give...
...sunlight back into space, making it a cooling factor, while seawater absorbs the sun's heat. That means that as polar sea ice melts because of warming, leaving more open water, the warming process could accelerate - which would then melt more ice. There are also concerns that as the permafrost in the Arctic thaws, it could release massive amounts of methane, a powerful greenhouse gas that would further accelerate warming...
...conventional wisdom, but in recent years, scientists have come to learn that by some measures, the solar system fairly sloshes with water. Mars, we now know, was once as wet as Earth and still harbors ice and perhaps liquid water. The moon is thought to have water locked in permafrost at its poles. Jupiter's moon Europa is probably home to a globe-girdling ocean beneath a thin rind of ice, and its Jovian sisters Callisto and Ganymede appear to be icy and wet too. Now, according to new findings by the Cassini spacecraft, one more name can be added...
...public transportation and crowded into a mass of hopeful yet frustrated pilgrims, interspersed with officers yelling conflicting information about which section of the crowd would be admitted first. After lurching forward in the shoulder-to-shoulder crowd, my friends and I took turns resting by sitting down on the permafrost in a bizarre forest of legs as the sky began to lighten. After a one second frisking, Transportation Security Administration officials eventually let us through. I could easily have carried a weapon onto the Mall. Luckily, we managed to snag the best front -row spots in our section. Things were...
...Evaporation and rainfall are increasing; glaciers are retreating; sea ice is shrinking; sea level is rising; permafrost is melting; wildfires are increasing; storm and flood damage is soaring. The canary in the coal mine is singing for all she's worth." - on reading the signs of climate change (Center for American Progress...