Why Cry for the Cryosphere?

The headline is actually a sentence that comes toward the end of Vanishing Ice, a new book that answers the question in encyclopedic detail. For those unfamiliar with the term, the cryosphere is the earth's natural ice ...

Switchgrass hybrid yields insights into plant evolution

Switchgrass is attractive as a potential bioenergy crop because it can grow for years without having to be replanted. Requiring less fertilizer than typical annual crops like corn, switchgrass can keep more nitrogen, phosphorus ...

A combination of insecticides and mites weakens honeybees

Today, scientists at the Institute of Bee Health of the University of Bern and the honeybee research association COLOSS have published an article in the peer-reviewed journal Scientific Reports that shows a synergistic time-lag ...

Toxic runoff from Tijuana River invades Imperial Beach

The southern shoreline of Imperial Beach has been closed since November due to water pollution spilling over the border from Mexico—including about 110 million gallons of toxic stormwater runoff in the last two months.

Sandman: The Vietnamese snowboarder training on dunes

Sun-kissed and shaggy-haired, Nguyen Thai Binh swaps his flip flops for bulky boots ahead of snowboarding practice on the sand dunes of southern Vietnam—the unlikely training ground for the country's fledgling winter athletes ...

page 1 from 23

Winter

Winter is one of the four seasons of temperate zones. Winter officially begins on the winter solstice, being the day of the year which has fewest hours of daylight. Winter ends, and spring begins, on the following equinox. In the Northern Hemisphere, depending on the year, this corresponds to the period between December 20 and 21 and March 20 or 21. Winter is the season between autumn and spring. In many countries in the Southern Hemisphere, including Australia , New Zealand and South Africa, winter begins on 1 June and ends on 31 August.

From a meteorological perspective, winter is the season with the shortest days and the lowest average temperatures. It has colder weather and, especially in the higher latitudes or altitudes, snow and ice. The coldest average temperatures of the season are typically experienced in January in the Northern Hemisphere and in June or July in the Southern Hemisphere.

This text uses material from Wikipedia, licensed under CC BY-SA