Earth Changes
For thousands of years, humans have practiced selective breeding - pairing the beefiest bull with the healthiest heifers to start a new herd. That concept was refined to develop plant hybridization and artificial insemination. Today we've got tastier corn on sturdier stalks, bigger turkeys and meatier cattle.
Now comes an Atlantic salmon that is genetically engineered to grow twice as fast as a regular salmon. If U.S. regulators approve it, the fish would be the first such scientifically altered animal to reach the dinner plate.
Scientists have already determined that it's safe to eat. They are weighing other factors, including environmental risks, after two days of intense hearings.
It all leads to an inevitable question: Is tornadic activity increasing?
"There's no evidence that it is," says Joshua Wurman, president of the Center for Severe Weather Research. "If you look at the frequency of tornado reports in the U.S., they're going up every decade, but there's pretty good evidence that it's due to improved reporting efficiency."
Scientists call this a reporting effect, meaning that reports of a phenomenon increase but actual occurrences do not. Yes, it might seem like more trees are falling in the forest, but it's only because more people are there to hear them.
The Aurora Borealis generally follows an 11-year "solar cycle" in which the frequency of the phenomena rises to a maximum and then tapers off into a minimum and then repeats the cycle.
According to researched at the Finnish Meteorological Institute, however, the solar minimum was officially in 2008, but has been "going on and on and on".
Noora Partamies, a researcher, said: "Only in the past half a year have we seen more activity, but we don't really know whether we're coming out of this minimum."
The Northern Lights, a blaze of colored patterns in the northern skies, are triggered by solar winds crashing into the earth and being drawn to the magnetic poles, wreaking havoc on electrons in the parts of the atmosphere known as the ionosphere and magnetosphere.
The death toll could rise much higher in Santa Maria Tlahuitoltepec, a town about 130 miles (220 kilometers) southeast of Mexico City. Oaxaca state Civil Protection operations coordinator Luis Marin said 100 people were confirmed missing, but Oaxaca Gov. Ulises Ruiz told the Televisa television network 500 to 1,000 people could be buried.
At least 100 homes were buried, and residents who made it out have had no success in digging out their neighbors, said Donato Vargas, an official in Santa Maria de Tlahuitoltepec reached by a satellite telephone.
"We have been using a backhoe but there is a lot of mud. We can't even see the homes, we can't hear shouts, we can't hear anything," he said.

A landslide in Puerto Escondido, Oaxaca, Mexico. Reports suggest up to 1,000 people may have died in the remote area of south-western Mexico
Hundreds of people were buried in their homes early Tuesday after a rain-soaked mountainside gave way in southwestern Mexico, officials said.
Donato Vargas, an official in Santa Maria Tlahuitoltepec reached by phone, said 500 people were missing and that 300 homes were buried after the slide around 4 a.m. local time.
"We were all sleeping and all I heard was a loud noise and when I left the house I saw that the hill had fallen," Vargas said.
"It has been difficult informing authorities because the roads are very bad and there isn't a good signal for our phone," Vargas said shortly before the call dropped.
Reached by the news agency AFP, Vargas added that "we fear that those missing are buried inside their homes because we've already searched nearby areas."
Bogota - Colombian rescue officials say it will take at least a week to unearth about 30 people who were buried by a landslide as they changed from one bus to another because a mountain road was blocked.
Regional disaster agency chief John Freddy Rendon says he doesn't expect any survivors from Monday's landslide between the towns of Giraldo and Canasgordas northwest of Bogota.
Summer made a particularly swift exit from the Highlands as the first sprinklings of snow paid an early visit to the north of Scotland.
The last time Britain saw a September cold snap as severe as this current one was in 2003, when much of northern England was below freezing.
Two Scottish weather stations recorded record lows: Tulloch Bridge recorded a temperature of -4.2°C, and Tyndrum -4.4°C - the coldest temperatures recorded since the two stations opened in 1982 and 1990 respectively.
For the people of the Cairngorms particularly, it was a wintry end to September.
Snow fell on the Scottish mountain range overnight, and hill-walkers had to wear their winter woolies and specialist equipment as they enjoyed blue, sun-filled skies with slippery conditions underfoot.
As usual it was the children who took best advantage with some of the earliest snowmen ever built on the Cairngorms.

People escape the record heat and enjoy the beach in Huntington Beach, Calif., as a heat wave grips Southern California, Monday, Sept. 27, 2010.
Downtown hit 113 degrees for a few minutes at about 12:15 p.m., breaking the old all-time record of 112 degrees set on June 26, 1990, said Stuart Seto, a weather specialist at the National Weather Service office in Oxnard. Temperature records for downtown date to 1877.
Electrical demand was much higher than normal for this time of year but no problems or shortages were expected on the state grid, said Gregg Fishman, spokesman for the California Independent System Operator, which controls about 80 percent of the grid.
"It's manageable. We've got the resources available," he said.
According to the data Keeling has meticulously collected since 1989 the world is running out of breathable air - and the rate that it's losing oxygen is now on the verge of accelerating.
Monitoring oxygen levels around the world is Keeling's job. He's very good at his job. And the data confirms that Earth's oxygen supply is dwindling.
Keeling created the famous 'Keeling Curve,' a graph that extrapolates the current trend of the oxygen depletion in the atmosphere.[1] The Cape Grim Observatory chart also depicts the ongoing depletion of breathable oxygen in the atmosphere.[2]
Less oxygen equals less life
A long time ago, the Earth was very rich in oxygen. The air contained such an abundance of the element - close to one-third of the atmosphere was oxygen - that animals and insects grew to gargantuan sizes. For instance, the ancestors of dragonflies once had four foot wingspans.
But now, due to overpopulation by humans, animals - even insect colonies - and deforestation, the oxygen in the air is become a diminishing resource.
This year,as usual, the Presidents and CEOs of major banks and corporations, esteemed academics and politicians, not to mention the foreign ministers of major Western nations (to name but a few) all coagulated in June in Sitges, Spain.
As I scanned the outline of their agenda however, something very strange jumped out of the page at me, something that forced me rub my eyes and do a 'double take' and then to conclude that either this gathering of the 'great and the good' are seriously misinformed, or one of the major points that Sott.net has been pushing over the past few years had just received some official corroboration. See if you can spot it:










