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Remember when I wrote about Panama disease, the fungal blight which is coming for the Cavendish bananas (after laying waste to the Gros Michel cultivar bananas back in the 50s)? Well, sadly, Panama disease is not the only apocalyptic fruit blight on the international circuit these days. It turns out that a bacterial disease is destroying citrus groves around the United States and beyond. The disease, known in English as “citrus wasting disease” is caused by a motile bacteria, Candidatus Liberibacter, which is spread by the Asian citrus psyllid (Diaphorina citri), an inconsequential Hemipteran insect which lives in citrus groves. There are multiple strains of greening disease, and there have been for a long time, but the newly problematic strain originated in China where it is known by the evocative name “huánglóngbìng” which means “Yellow Dragon Disease.”
The wild ancestors of most of today’s grape fruits, oranges, and lemons, came originally from the forests of East and South East Asia so it is not a huge surprise that this horrible disease comes from there too. Unfortunately hemipteran insects can easily proliferate in new ecosystems, so the disease became a problem after these invasive insect pests gained a widespread foothold throughout the semi-tropical regions where citrus is grown.
Citrus fruit is delicious and wonderful beyond compare…so it is worth big money. This means that agricultural scientists have been studying huánglóngbìng and attempting to stymy it with medicines, pesticides, and transgenic tinkering. The scientists themselves have been hampered in their research by the fact that it is hard to maintain and study citrus plants infected with the disease because they die so swiftly (the infected citrus plants, not the agricultural scientists). Powerful antibiotics work to wipe out the disease, but it is not practical to give these medicines to trees (though we will probably try—with predictable results). Scientists feel that there may be a transgenic solution, but it is unclear how marketable such a chimera will be (since protectionists and Luddites have been fear-mongering pretty hard against GMOs).
This leaves mass application of insecticide as the best bulwark against huánglóngbìng. It is starting to seem that small orchards and groves which are unwilling to commit to this kind of regimen will soon be gone. All of this strikes me as unbearably sad and frightening. Why are there so many blights everywhere? Has this always been a peril of agriculture (indeed of life?) or has contemporary monoculture paved the way for widespread proliferation of these superbugs? There must be some parasitoid wasp or something which has kept these damn psyllids from wiping out species citruses of wild Asia. Maybe we could bring that here…but it probably would cause some new horrible problem.
We’ll keep you posted. In the meantime you should glut yourself on oranges this winter…while you still can.
One of the best things about the Greek mythological pantheon is that it contains gods who ruled before the Olympians but have passed into obscurity…as well as weird outsiders who hardly seem to belong in the story at all. Some of these deities were once central to things but have been broken, defeated and deposed (like Cronus), whereas others are otherworldly and cling to the darkest most shadowy edges of mythical realm (like Nyx, the goddess of primeval night). I bring this up to introduce the Erinyes, the goddesses of savage unending vengeance, who are sometimes known in English by the heavy-metal name “the Furies”.
The Erinyes are mentioned in the oldest surviving Greek texts which we can translate. They punished the most terrible criminals who had violated the fundamental moral order of ancient Greece (a slave society where murder was a part of everyday life). Those who felt the endless wrath of the furies were guilty of crimes such as violating oaths, abusing guests, committing incest, or murdering kinfolk. The Erinyes’ dwelled in the underworld, but if a malefactor brought their wrath upon himself, they would pursue him across the land, the seas, and beyond till they could rip him apart. Death brought no release from their tortures–since they carried their victims’ spirits to the depths of Tartarus to punish forever with snakes, flails, burning brands, and brass-studded whips. The Erinyes took the form of horrible angels: they had huge dark wings and the bodies of twisted hags (although occasionally they could take on a terrible beauty). Some poets asserted there were three furies—Alecto, Megaera, and Tisiphone–but in other sources they seem numberless and lacking individuality.

Orestes seeks shelter from the Furies at teh Foot of Athena (Engraving from G. Schwab’s Die schönsten Sagen, 1912)
Erinyes show up in the most horrible myths of murder, savagery, and everything gone appallingly wrong. They therefore make appearances in some great works of literature and art…like The Eumenides, the final play of the Oresteia. In fact the name The Euminides (meaning “the kindly ones”) refers to the dreadful Erinyes—for like Hades (or Voldemort) it was thought unwise to refer to them except via euphemism. There are different versions of how the ancient goddesses came into being. According to Hesiod they were born when the Titan Cronus castrated his father the sky god Uranus, and threw his genitalia into the sea (an event which also precipitated the birth of Aphrodite). Other poets, however assert that they are even older and descend directly from the outsider goddess Nyx, who predates the other gods.
Welcome back from the Saturnalia…er…Christmas break. This year is winding down fast. Later on this week we’ll do some 2010 wrap-up, but for right now let’s concentrate on what everyone else is concentrating on—the crazy weather.
Yesterday and last night New York City was socked by the worst blizzard I have ever seen here. Around 9:00 PM last night I walked out along 7th avenue in Park Slope to be confronted with a snowscape straight out of a Jack London story (I braved this fearsome weather to return Despicable Me to the video store on time). Evil winds whipped great sheets of snow into my face and reduced visibility down to 10 meters or less. Huge snow drifts blocked the roads and made travel impossible. The BMWs and Audis of Park Slope’s worthy burghers were rendered useless. A great dim shape looming in the white waste was revealed to be an abandoned city bus trapped in a drift with its emergency blinkers turned on–a restlessly dozing behemoth. This morning there was a snow drift in my room formed by snow blowing through the crack under the garden door.
I made my way to work this morning walking down the middle of the road—no vehicles were operating. I had to hike through the drifts and ice to a distant train since the F was not operating (and probably still isn’t). Even Rockefeller Center seemed empty. Sitting in a plaza amidst impassible streets the great Christmas tree is half covered in snow and hoarfrost.

The Rockefeller Tree seen from the break-room at my office this morning. Note the absence of traffic!
All told, New York received 20 inches of snow (more in some places) with winds gusting up to 40 miles per hour. According to the US National Weather Service the blizzard was the result of a low pressure system which originated off North Carolina which means Georgia and South Carolina have had their first white Christmas in over a century. Holiday travelers are stuck where they are–since airports all along the coast are closed. I shudder to think of people returning to New York from Europe–which was hit by its own blizzards last week.
So what is up with this weather? Park Slope Brooklyn has been hit with a tornado, a hailstorm (which I didn’t blog about but which flattened the autumn remnants of my garden with gumball sized hail), and this blizzard. We had some fearsomely hot days this summer as well—which I didn’t think to mention since I kind of like them. Since global climate scientists have no definitive answers, neither do I–however it bears remembering that 2010 was a year of greater than average volcanic activity. Not only did Eyjafjallajökull in Iceland disrupt Europe’s air traffic for weeks by erupting directly in the Jet stream. It was joined by Mount Merapi erupting in Indonesia and various Siberian and Chilean volcanic events (you can review dramatic photos of the year in eruptions on NASA’s website). These eruptions come in a time of extremely strange solar weather and, in the bigger picture, a great ice age is still ending (not to mention whatever climate change we have caused with our love of fossil fuels and our stubborn refusal to move forward researching and funding nuclear power options).
Of course this is anecdotal speculation on my part. I am certainly not an atmospheric scientist, but merely a hapless office drone with extremely cold wet feet. Even so, I hope you will buzz back to Ferrebeekeeper this week so we can look back over the year and think about what is coming. In the mean time stay warm out there!