Swiss sheep to warn shepherds of wolf attacks by SMS
Using sheep to alert shepherds of an imminent wolf attack by text message might sound fanciful, but testing is already under way in Switzerland where the predator appears to be back.
Using sheep to alert shepherds of an imminent wolf attack by text message might sound fanciful, but testing is already under way in Switzerland where the predator appears to be back.
Other
Aug 4, 2012
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Arctic tundra, a unique ecosystem characterized by permafrost, contributes to approximately 45% of all Arctic methane sources and therefore plays an important role in global carbon cycle. Arctic region is warming faster than ...
Environment
Nov 9, 2020
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From the Neolithic to present times, the amount of sunlight we see in a day has had a profound impact on human culture. We are fast approaching the winter solstice for the Northern hemisphere, which takes place on December ...
Astronomy
Dec 21, 2018
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Walking outdoors in the fall, the splendidly colorful leaves adorning the trees are a delight to the eye. In Europe these autumn leaves are mostly yellow, while the United States and East Asia boast lustrous red foliage. ...
Plants & Animals
Aug 13, 2009
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For the first time in almost 20 years, northern autumn is beginning on the night of a full Moon. The coincidence sets the stage for a "Super Harvest Moon" and a must-see sky show to mark the change of seasons.
Space Exploration
Sep 22, 2010
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Every autumn we are treated to one of nature's finest seasonal annual transitions: leaf colour change and fall.
Environment
Apr 16, 2019
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10
Sick of sweltering summer heat? Well, you are in luck, because fall starts Thursday, at least according to meteorologists.
Earth Sciences
Sep 1, 2022
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The White House's 2021 budget calls for US$28.9 billion for the Pentagon for nuclear weapons and a 20% increase to $19.8 billion for the National Nuclear Security Administration.
Environment
Feb 26, 2020
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Bats gather to feast as nocturnal insects fly through mountain passes in the Pyrenees each autumn, new research shows.
Plants & Animals
Aug 15, 2023
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54
It's the time of the equinox or more specifically the spring equinox for us in the southern hemisphere.
Space Exploration
Sep 22, 2014
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Autumn is one of the four temperate seasons. Autumn marks the transition from summer into winter usually in September (Northern Hemisphere) or March (Southern Hemisphere) when the arrival of night becomes noticeably earlier.
The equinoxes might be expected to be in the middle of their respective seasons, but temperature lag (caused by the thermal latency of the ground and sea) means that seasons appear later than dates calculated from a purely astronomical perspective. The actual lag varies with region. Some cultures regard the autumnal equinox as "mid-autumn", others with a longer lag treat it as the start of autumn. Meteorologists (and most of the temperate countries in the southern hemisphere) use a definition based on months, with autumn being September, October and November in the northern hemisphere, and March, April and May in the southern hemisphere.
In North America, autumn is usually considered to start with the September equinox. In traditional East Asian solar term, autumn starts on or around 8 August and ends on about 7 November. In Ireland, the autumn months according to the national meteorological service, Met Éireann, are September, October and November. However, according to the Irish Calendar which is based on ancient Celtic traditions, autumn lasts throughout the months of August, September, and October, or possibly a few days later, depending on tradition. In Australia, autumn officially begins on March 1st and ends May 31st According to United States unofficial tradition, autumn runs from the day after Labor Day (i.e. the Tuesday following the first Monday of September) through Thanksgiving (i.e. the fourth Thursday in November), after which the holiday season that demarcates the unofficial beginning of winter begins.
This text uses material from Wikipedia, licensed under CC BY-SA