Archive for February, 2012
While a few scientists disagree with the overall scientific consensus that human behavior is contributing to climate change, there’s no disagreement over one fact: the Earth’s mean surface temperature is rising. While some regions on Earth are experiencing a cooling trend, the overall average temperature has increased about 0.74 degrees Celsius since the 1800s . Climatologists believe this trend will continue with potentially devastating consequences for us and the environment.
So what can be done? Is there a way to reduce or even reverse the warming trend? Or can we only take measures to avoid making it worse?
The news isn’t all bad. There are some measures humans can take to slow, halt or perhaps even reverse the warming trend. These measures range from changing our behaviors and making some sacrifices to plans that seem to belong in the realm of science fiction.
One way to affect global warming is to reduce greenhouse gas emissions. Greenhouse gases are important. Without them, the Earth would lose heat too quickly and life as we know it would be impossible to sustain. Greenhouse gases, which include water vapor and carbon dioxide, absorb heat in the lower atmosphere and reflect it back to the Earth. But according to the Intergovernmental Panel on Climate Change (IPCC), a consortium of more than 2,000 scientists, humans are increasing the greenhouse gas effect through carbon dioxide emissions from burning fossil fuels.
Assuming that the IPCC’s conclusions are accurate, reducing greenhouse gas emissions and planting trees could help slow and eventually reverse global warming trends. It takes time for the environment to absorb carbon dioxide. Right now, humans are producing carbon dioxide faster than the environment can absorb it. It doesn’t help that humans are also clearing large regions of forests for various reasons — that reduces the carbon-absorbing abilities of the environment, too.
But even if we were to convince everyone to stop cutting down trees, start re-foresting the planet, switch to environmentally friendly fuels and energy production methods, and generally try to reduce greenhouse gas emissions, the Earth’s temperature could continue to climb. It could take as long as 1,000 years after a complete halt of greenhouse gas emissions for environmental measures like sea level and ocean surface temperature to return to pre-industrial levels . In addition, other factors besides greenhouse gas emissions can contribute to global warming.
There’s no question that if warming continues, it’ll cause big problems for us. Sea levels will rise as ice melts at the Arctic circle. Farmers will see reduced yields in crops as the temperature climbs. Certain regions will experience extreme weather events like heat waves more frequently. And it’s possible that we’ll see bigger hurricanes more often. But if the globe keeps warming even if we cut greenhouse gas emissions, what can we do?
The first step might be finding a way to capture carbon from the atmosphere and recycle it ourselves, giving nature a boost.
See the rest at http://science.howstuffworks.com/environmental/green-science/reverse-global-warming1.htm
My relations have constantly been saying how the earth was formed in 6000 years, and they don’t listen to geological evidence such as radioactive carbon dating, saying they can be inaccurate in certain conditions. But now I have mathematical proof, which they believe considering one of them is a teacher. The pyramid of Giza was built in an estimated 25 years, not long considering it’s weight of 5.75 megatons. If you put the entire time the earth has existed – 4.5 billion years – then divide it by 6000 years, you get 750,000. Which means anything that happens, has to happen 750,000 times faster. Divide 25 years by 750,000 and you get seventeen minutes and 31.2 seconds, which means the slaves had to work pretty damn fast. Also, the Hundred Year War would be a would have been a one hour and ten minutes, 4.8 seconds War. It also means that Elvis Presely lived 29 minutes and 51.47 seconds. So minus that from the average human life span and fans will be relieved to know he’s still expected to live to
Saturday, August 15, 2043.
Scientists at the Max Planck institute in Munich, Germany recruited six lucid dreamers with years of experience for their study. Once in their dream, the subjects signaled researchers with left-right-left-right eye movements and then immediately started clenching their left hand ten times. Then they performed the eye movements again and made ten clenches with their right hand. The sideways eye movements were distinguishable from the spontaneous rapid eye movements on the EOG (motor eye component of an EEG) and gave a time point for researches to measure the dreamed fist clenches. Scientist found the clenche activated the expected areas in the contralateral sensorimotor cortex.
Previous brain lesion studies in cats and Rapid eye movement behavior disorder indicated that the brain might enact dream movements activity similar to when awake, but that the movements are prevented by active motor paralysis downstream of the signal. This study was the first to image the brain during specific dream content, and it showed that dreaming movements have similarity to actual and imagined fist clenches. If this finding also holds true for the sensory areas of the brain, it indicates that the visual decoding work of labs like Jack Gallant at the University of California, Berkeley could be used to record and visualize dreams–that is if you canstay still and manage to fall asleep through the loud clunkings of a claustrophobic fMRI machine.
The Gallant Lab reverse-engineers video from the brain activity from subjects watching it.
It appears as weak evidence that astrobiology experts say that we havent’t heard a single ET call in the past 50 years from the dark reaches of outer space, simply because we havent’t been listening for long enough. This is complete and utter nonsense. There are 10^26 planets out there in the far beyond, and a portion of those – maybe a 10 thousand trillion – of them have advanced communicating civilizations that are inhabiting them. There are supposed to be more than ten thousand civilizations in the galaxy alone.
Even though it takes 10,000 years for messages to traverse from one side to the other, lots of others may have occurred closer that may only take 500 years to get here. If the galaxy has existed for around ten billion years, some civilization must have evolved at a different time. Earth only came into being 4.5 billion years ago. So that leaves another 4,500,000,000 years for other civilizations to evolve. We must have heard something. It’s not like the universe enforced an intergalactic SOPA and PIPA in the precise years we’ve been listening.
The real reason we’re not hearing anything is that we are our assumptions about how such a message would look like is blatantly wrong. We assume ET will shout out in plain text to the galaxy, and will not be obscured by gas or dust, and will be in radio. And in silicon. All of these are wrong. We’ve only employed commercial radio in the past three decades, and we’ve already moved into the digital age. Where everything is encrypted into a nonsensical bunch of gibberish-like random-noise.
This has huge implications for ET’s call. All the random noise we’ve been getting it actually the stuff from alien chat-rooms and bank account transactions. If we could tap into that by finding the private encryption key, we could be onto something big.