A UN official says it looks from the air like parts of Mozambique were "run over by a bulldozer".

Pollen from birch trees was carried along with dust from the Sahara Desert on strong winds that originated in Eastern Europe.

Gallery | The fires, which were swept in from Mongolia by high winds, have caused almost $9.4 million in damage.

The Arctic Sounder - Serving the Northwest Arctic and the North Slope

The death toll from a storm that crashed into southeast Africa last month has risen above 1,000, with more than 4,000 cases of cholera reported among survivors in Mozambique, the hardest-hit country.

Why air quality is worse at different times of day and how you might be violating city code with your leaf blower.

Alder catkins (the pollen-rich flowers on alder trees) haven't reached their peak yet, but there are a lot of them. There can be four to five million pollen particles in a single catkin.

The tragedy came after several days of dire warnings about the dangers of river travel due to an unusually early warm-up. Search and rescuers crawled onto weak ice, open water all around, to help retrieve the survivors.

Two four-wheelers carrying five men leaving Bethel broke through needle ice on the upper end of Church Slough on Sunday night. Two of the men died, while three others were treated for hypothermia in Bethel.

A sheriff and his two daughters were injured near Lake City in southwestern Colorado after an avalanche destroyed their home Tuesday morning.

Crews are working to free multiple cars that are trapped by an avalanche on Highway 91 near Copper Mountain, the Colorado State Patrol has confirmed.

Warm temperatures break 30 year record.

Thousands of years old ice disappears all over Norway. Dag Inge Bakke (42) is among those struggling to save the frozen archive of the past.

Locals blamed a mining company for attempting to hide what they called an 'ecological tragedy.'

The winter holiday offers 15 degrees (C) of heat and spring flowers.

Blame for pollution is focused on failure of coal plant to filter emissions.

Thinning sea ice has driven more than 50 polar bears ashore on an Arctic archipelago in northern Russia, causing chaos for the local population.

Snow may have fallen at the lowest elevation ever observed in the state.