Iceland is in a unique position as far as the changing global environment. The northern country not only sees the melting ice, but also has a front-row seat for the effort to convert to a clean-energy economy. Iceland uses clean energy for virtually all of its electricity and heating.
The persistent drought across much of the United States has another casualty, the water in the Mississippi River. One of America's primary ways for shipping commodities to markets around the world, the low water levels means smaller barges, closed stretches of the river and, eventually, higher prices for all of us.
Scientists studying the Arctic are predicting the ice cap will shrink to record levels this year, a condition many blame on human-caused climate change. That'd led some to conclude that before this decade is out, we could have a summer day or days where there's no Arctic ice cap at all.
The water system in the United States generally works so well that for many, it's invisible. The pipes lay hidden beneath the ground and when Americans turn on their faucets, the water flows at little cost. But as the U.S. experiences the worst drought in more than 50 years, perhaps it's time to conserve water.
Hydraulic fracturing has recently emerged as an alternative source of energy in the United States. Now China, the world's largest energy consumer, is experimenting with it. The Chinese government hopes the controversial technology will help wean the country off dirty coal.
Catastrophic global warming can be staved off if humans can keep the climate from warming more than two degrees Celsius, and emit less than 565 Gigatons of carbon dioxide, some scientists believe. But environmentalist Bill McKibben says that's not enough.
Last year, British artist Chris Drury installed a controversial sculpture on the University of Wyoming's campus. The 36-foot-diameter vortex of logs killed by pine beetles atop a bed of Wyoming coal was a representation of the state's energy sector and the damage wrought by climate change. It didn't last a year.
The effect of this summer's drought in the United States may well be felt around the world soon. That's because the U.S. is the world's biggest corn exporter. As harvests fall and prices rise, many of world's poor will feel the squeeze.
That Greenland's massive ice sheet melts during the summer is nothing new, but the size and speed of a recent thaw is. NASA scientists say a four-day melt in mid-July was the largest one in more than three decades of satellite observation.
A massive ice island broke off of the Petermann Glacier in Greenland. The iceberg, which contains enough fresh water to supply every American for half a year, is roughly twice the size of Manhattan in New York.