Early summer in Moscow brings an onslaught of allergy-inducing, Instagram-ready fluff from poplar seeds.

Dr. Antony Ham Pong, who's been treating allergy patients for about 35 years, warns the combination of a wet spring and heavy snow melt threaten to create a "super bloom of ragweed with lots of pollen."

For those who suffer from seasonal allergies, spring means red eyes, mucus and fits of sneezing. This year, the Lynn Canal has seen a remarkable spruce pollen bloom.

Pia Östensson, a biologist and pollen expert at Stockholm's Natural History museum, explains why there is so much aspen fluff this year and why it is not related to recent wildfires.

Spring blossoms, dusty streets, distant fires and a lack of rain combine to create hazardous respiratory conditions.

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.

Shiveluch volcano (Kamchatka) in Kamchata is erupting. Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 33000 ft (10100 m) altitude or flight level 330 and is moving at 55 kts in S direction.

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.

In Etne in Hordaland, 30.4 degrees of heat were measured at 15 today. Never has it been so hot so late in the year in Norway.

Two record cold nights have damaged grape buds in Essex County with Merlot, Syrah and Sauvignon Blanc particularly at risk.

Damage assessment underway due to fallen trees, hanging debris

According to a new study, -111°C is more than 30°C colder than typical storm clouds and is the coldest measurement of storm cloud temperature on record.

After frost comes spring, but when it happens in mid-November plants get confused. That is not good news.

Two deadly wildfires fueled by "devil winds" tore through opposite ends of California on Sunday, with residents urged to heed evacuation orders by officials forced to leave their own homes. In northern California, the Camp Fire is one of the deadliest and most destructive in the state'

A meteorologist says unseasonably warm weather in B.C. is once again causing a large area of the Pacific Ocean to heat up considerably, emulating a phenomenon from past years known as the “blob.”