With recent data showing an unexpected rise in global emissions and a decline in energy efficiency, a growing chorus of economists, scientists and students of energy policy are saying that whatever benefits a cap on greenhouse gas emissions yields, it will be too little and come too late.
The Arctic ice cap shrank so much this summer that waves briefly lapped along two long-imagined Arctic shipping routes, the Northwest Passage over Canada and the Northern Sea Route over Russia. Over all, the floating ice dwindled to an extent unparalleled in a century or more, by several estimates.
New studies project that the Arctic Ocean could be mostly open water in summer by 2040 -- several decades earlier than previously expected -- partly as a result of global warming caused by emissions of greenhouse gases.
Within the next 100 years, the growing human influence on earth's climate could lead to a long and irreversible rise in sea levels by eroding Earth's vast polar ice sheets, according to new observations and analysis by several teams of scientists.
A group of climate and ice experts say they have new evidence that earth is not even halfway through the current warm era, dispelling concerns that the Earth is overdue for a new Ice Age.
The author looks at current theories about global warming and orbital cycles to answer the question of "When will the next ice age begin?".
In just 50 years, the global spread of industrial-scale commercial fishing has cut by 90 percent the oceans' population of large predatory fishes, from majestic giants like blue marlin to staples like cod, a new study has found.
The U.N. Office for Outer Space Affairs is considering proposals to establish pollution and air traffic controls in orbit.
NASA is investigating whether space debris caused the Columbia disaster. Analysts warn that more disasters are inevitable because of the dearth of quality tracking data.
Scientists working for the Pentagon have trained ordinary honeybees to ignore flowers and home in on minute traces of explosives, a preliminary step toward creating a buzzing, swarming detection system that could be used to find truck bombs, land mines and other hidden explosives.