In just seven years, as much as one-third of the mountain-birch forest in the North Calotte region was severely defoliated by two moth species. Researchers now have a better understanding of what happened.

About a month ago, residents of St. Lawrence Island found a patch of oily, white goo on the beach, along with some dead sea birds covered in the substance.

A lot of water went into the start of the tunnel and then it froze to ice, so it was like a glacier when you went in,” Statsbygg spokeswoman Hege Njaa Aschim told the Guardian of the water breach.

A mysterious anthrax outbreak over the summer killed more than 2,300 reindeer and at least one child.

For the third day in a row, Phoenix has broken a daily high temperature record.

From Massachusetts to Virginia, the East Coast was pounded by a storm that threatened to break records. Nearly two million people lost power.

The risk associated with any climate change impact reflects intensity of natural hazard and level of human vulnerability. Previous work has shown that a wet-bulb temperature of 35°C can be considered an upper limit on human survivability. On the basis of an ensemble of high-resolution climate change simulations, we project that extremes of wet-bulb temperature in South Asia are likely to approach and, in a few locations, exceed this critical threshold by the late 21st century under the business-as-usual scenario of future greenhouse gas emissions. The most intense hazard from extreme future heat waves is concentrated around densely populated agricultural regions of the Ganges and Indus river basins. Climate change, without mitigation, presents a serious and unique risk in South Asia, a region inhabited by about one-fifth of the global human population, due to an unprecedented combination of severe natural hazard and acute vulnerability.