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Atmospheric methane levels are of interest due to its impact on climate change. Atmospheric methane is one of the most potent and influential greenhouse gases on Earth. The 100-year global warming potential of methane is 25, i.e. over a 100-year period, it traps 25 times more heat per mass unit than carbon dioxide.
Early in the Earth's history—about 3.5 billion years ago—there was 1,000 times as much methane in the atmosphere as there is now. The earliest methane was released into the atmosphere by volcanic activity. During this time, Earth's earliest life appeared. These first, ancient bacteria added to the methane concentration by converting hydrogen and carbon dioxide into methane and water. Oxygen did not become a major part of the atmosphere until photosynthetic organisms evolved later in Earth's history. With no oxygen, methane stayed in the atmosphere longer and at higher concentrations than it does today.
Scientists have discovered an unidentified source of high-energy cosmic rays bombarding Earth from space. They say it must be close to the solar system and it could be made of dark matter. “This is a big discovery,” says John Wefel of Louisiana State University and Principal Investigator for ATIC, Advanced Thin Ionization Calorimeter, a NASA funded balloon-borne instrument high over Antarctica. “It’s the first time we’ve seen a discrete source of accelerated cosmic rays standing out from the general galactic background.” The new results show an unexpected surplus of cosmic ray electrons at very high energy — 300-800 billion electron volts — that must come from a previously unidentified source or from the annihilation of very exotic theoretical particles used to explain dark matter. “This electron excess cannot be explained by the standard model of cosmic ray origin,” said Wefel. “There must be another source relatively near us that is producing these additional particles.” Read more: www.universetoday.com...
An officer at the Los Angeles Police Department's North Hollywood station said police searched the area for a half an hour Tuesday night but had no luck in determining what caused the sound. The officer said police received numerous calls about the noise. At about 9:30 p.m., numerous people began tweeting about a loud explosion. Some thought it had come from a North Hollywood Metro station; others reported hearing an explosion in Studio City. "Mysterious explosion a few minutes ago. What's going on? #LA" tweeted @ThatVitalSpark. "Seriously, any leads what the hell this boom was in North Hollywood? Im shook up a bit" tweeted @RajRawal37. A Reddit user posed the question: "What just blew up in North Hollywood?" By 6 a.m., there were more than 120 comments, but no crowd-sourced answer. However, possibilities ranging from alien invasions to meteors were proposed. Can you solve the case? Let us know in the comments section below or by tweeting @lanow.
Salem and Marblehead police officers searched the area of Ocean Avenue early Saturday morning for evidence of what could have caused the large boom that prompted residents across the area to call 911. According to Sunday morning's Salem police log, At 1:34 a.m., police received multiple calls regarding a "loud bang" on Ocean Avenue. They were unable to locate the source.
LEXINGTON COUNTY, SC (WIS) - Residents of Red Bank in Lexington County appear to have gotten a loud awakening Thursday morning as multiple reports indicate a loud booming noise in the area. WIS News 10 viewers poured onto our Facebook page this morning to report the sound. "What was the horrific boom in the Redbank area," asked Lisa Russell Fields. "People are saying it sounded like a plane crash or explosion." "I also heard the "big boom" this morning. So did a lot of other people, it sounds like a close cannon or something and will shake the whole building/house," said Jennifer Lee Stokes Kleine. "Does anyone have a concrete explanation for the loud boom that shook houses in Lexington County around the Redbank/YMCA/Old Barnwell Road area this morning around 8:30 a.m.," said Mary Frances Henry Bell. So, what was it? The Lexington County Sheriff's Department doesn't know either. "Law enforcement officers and public safety personnel have been unable so far to determine the source of the noise," said Sheriff's Department spokesman Maj. John Allard. "No explosions have been reported." A similarly loud explosive noise happened last year in the South Congaree portion of Lexington County.
“We don’t really know what this was. We don’t have the operational capability to even locate something like this, so we can’t say where it came from. We just don’t know,” Whidden said. People in Wyoming, Indiana, Oklahoma and California also reported hearing a boom similar to what was heard in Utah.
Originally posted by MamaJ
In this video below it does appear to be some kind of fireball action. Thoughts?
Certainly not a fireball or fireballs (as in material entering or reentering our atmosphere) in this footage.
Originally posted by MamaJ
reply to post by Laserfloyd72
Still cannot find evidence the video sound is from 9-11. The screeching sound, I don't think so and also not so sure there are not a lot of car alarms going on in the distance or fire engines going out to check for anything as the reports were coming in of "blast" sounds. I just don't know.... but what I do know is its happening everywhere and possibly more frequent.
reply to post by FireballStorm
To me it looks more like fares or some kind of pyrotechnics falling.